My choice boils down to how well I perceive their verbal/writing creativity to be. Creative minds drive me to reach out.
Stimulate my mind and game on.

Not exactly a Sofie's Choice, but for me it would probably come down to first impression; that is, how she answered my initial inquiry. Was she prompt? Professional with a little flirtiness? Or was it an assistant with a dry demeanor? I'm even impressed by (or maybe turned off by lack of) good grammar. First impressions would go a long way with me if I HAD to choose only ONE.

I also assume they're all within a tight age range, their incalls are all conveniently located, and they don't have intrusive screening requirements.

your last paragraph, there might not still be five left.  Lol

Location and availability that fits MY schedule are the number one considerations for me, because maximizing the use of my time, and conversely, minimizing the waste of time is my number one priority when booking.  I will consider more flexibility on the list of things she put up, so driving distance and getting the appointment time I want that fits into the rest of my schedule for that day are paramount.  

I generally find it difficult to find someone I want to meet. So on the rare occasion I find two that I want to meet and I choose one for whatever reason, and it doesn't go well  - then I say "damn I should have chosen to meet the other woman!" But such is life.

But to answer your question - the reasons for the choice are always different.
Most often it's schedule or budget.

That’s the great thing about hobbying! I would put all five on my to do list and knock them out (pun intended!) in the next month or two!

Forcing me to pick one out of my current top five is a stretch as usually there are not even two in a dead heat! My top choices always have some unique hook which sparks my interest - rarely the same for two top choices!

I would check the reviews one more time for any hint of misrepresentation in service first, then looks! I’d choose the one with the highest praise for bbbjdt and dfk, and who clearly loves both! Young, slender, natural and oozing sexiness also prioritized!

If everything else is equal, then it's a case of tossing a dart.

I'd prefer all-natural, although that's not set in stone.

 
I would say it would be up to the feel I get from the photos. I don't have a checklist of things I'd be looking for and I can't even articulate what I would be looking for in the photos. I do know that there are times when I look at a lady's photos and say to myself "I really want to meet her".

 
Chances are that with 5 to choose from I would find one more compelling than the others.

If they respond in a timely manner (within 24 hours), come off as friendly and professional and are listed on P411 they'll for sure be under consideration. I'm probably a little different in the way I evaluate providers that I may want to see.  If I contact a provider that I'm interested in seeing my first instinct is to look for a reason, any reason, from their communications with me for why I wouldn't want to see them.  If there aren't any red flags, or anything that irritates me, they'll then make my short list.  After that I just go with my gut instinct.  

First impressions count for a hell of a lot and if I get any indication from their communications with me that they look at a session with me like they're doing me a favor I'll go in another direction and give my business to someone else who is more professional.  

That may sound harsh but I've screened the providers I've seen this way for years and years and its worked out very well for me, so I'm just sticking with a tried and true method that has had very good results.  

let's say that I was scrolling thru some ladies and their reviews and you were one of the 5. It would be a no brainer for me to pick you based in your pics and reviews  You would be at the bottom of my list while I'm lookin at it upside down.

Not clear to me if you're asking how I vet the provided criteria (web site, photos, rates, reviews) or if I am suppose to take all the criteria as a given and true.

 
In the later case it's pretty simply. Who is available when I want the appointment or just flip a coin.

 
In the former case, while a well designed web site is a positive it is a very minor aspect for me -- as long as it is just not complete crap. The pics will will look at carefully to see how the lighting, pose and angels might work to create an image that is not quite what the reality is. I get that these are ad images so supposed to create interest. I also get that quite often the well done photograph will look better than the woman does in person. I will also look for signs of photoshopping to cover things like more belly than they want to confess to having. The ones that I think are going to be most representative of the lady will be the one most likely that I would consider seeing.

 
In terms of reviews, I would (don't really use them all that much these days -- and only see the General Details as not VIP), I would look at the reviewer's history or reviews. Ideally I would find some that have seen women I also saw. That would allow me to better judge their review of someone I have not seen.  

 
If I just don't have a lot of confidence in the reviews available and have concerns about the pictures I'm not seeing that woman regardless of the price.

If I get the impression from what she wrote, and what she didn't write, that I can expect a GPS personality disorder (it's in the draft for the DSM VI), she's off the list. I realize you guys need to sell yourselves', but there's a point at which it starts to give away that the girl is obsessed with herself and I'll never match that level of worship... though I might have if she wasn't already crowding the space.

Assuming all things are equal like time they can meet, etc. Then I go for first impression and reviews.  My first impressions is usually good and if their reviews are good then that does it for me.  I want to know what I am walking in to and if their reviews are all over the place or their level of service is not up to what I want then it is an easy no for me.