I've used a number of different agencies over the years, and I've talked with owners/operators/phone staff of a number of others.  In my experience, TLC wins hands down in pretty much all categories: number of ladies available, price, reliability, "customer service" and pretty much anything you can think of, except perhaps in ease of contact.  Since the agency has gotten so big, and so popular, Adonia is often swamped and so it may be hard to reach her.  I wouldn't suggest using her for a "last minute" kind of thing because of that but if you plan ahead you'll be ok.  Can't really fault Adonia for this since, as I said, she's very busy and with good reason.

If I had to make a second choice, that would probably go to Pamela Peaks based on the number of ladies she has available, edging out HelpUBookHer who would come in a close 3rd, almost a tie for 2nd.  To be fair, I don't know exactly how many ladies HelpUBookHer represents since I don't have access to their UTR list but from what I've heard, I think Pamela still edges them out on availability.  Plus, she's been around longer and honestly, I've never heard a bad word about her except for the fact that she requires (or at least used to require) deposits in advance of any date.  Personally, I don't like that but if you don't care then she'd be a solid 2nd choice in my book.

I've never heard anything bad about HelpUBookHer and my dealings with them have been just fine. I would certainly consider using them if they had a lady available that wasn't available through the other 2 agencies.  But the fact that I haven't booked any dates through them (yet) may color my perception which is why I put them a close 3rd, possibly a tie, to Pamela Peaks.

But, back to the point: I've used TLC and talked with Adonia enough to make her my "go to" person whenever I want to book a date.  As Robbin put it, I've built a rapport with Adonia over the years and she's always done right by me.