go with a safety well reviewed provider in your area who is attractive enough for your taste.  That means it won't be the hottest girl or the hottest girl who may not even be real.  Go for the safe play as a newbie.  If/when you get more experienced or when you are looking at eros/bp ads regularly you get more experienced in potential fakes or potential red flags.  Always use google image search ALWAYS.  anyone who gets ripped off and didn't use image search deserves to be ripped off because they are an idiot.  I think the eros authenticated is a positive but i still need confirmation from more traditional sources.

Not all real providers have feedback, the lack of TER reviews is not a deal breaker but it definitely means i need to be all that more diligent.  Usually if i can't find anything where i have some confirmation it's a real person i won't see her.

How do i get confirmation?  TER search boards, google image search, phone # search, area code search, maybe google pulls up another ad with a different number, cross check that number, cross check new photos, maybe you can find an instagram, facebook or twitter (usually for high profile pstars), see if they mention your city etc etc.  Is it of a famous tgirl? are they from brazil (usually fake) Do they have a website?  Is it a professional website?  does the website look like it took 5 minutes to make?  I've seen websites where the creator was not careful and it indicates it was create just a few days ago things like that.  Is there contact info on the website (sometimes girls just use someone elses website hoping the client won't cross reference)  Usually if there is a decent website with correct contact that's actually a good indicator that person is at least real.  

Also important does the person even look like a TS?  Yes some TS i could never tell, but in those situations they are prob well known to the provider community.  anyone who i see looks 100% GG, and all the photos are ones that looks like they were stolen from a modeling site is a red flag to me.  Low quality or small pictures, also a red flag.  You can even tell by e-mail, some girls change their provider name but not the e-mail and it doens't match, if they are claiming to be international and live overseas and visiting for a short time, most people outside of USa don't use gmail.  These are all things to look for that newbies don't.  Newbs just google the phone number or name and that's it and they are suprised whent hey get ripped off.

For example i assume you are in boston, there are not a lot of providers on eros so it should be relatively quick to check them on TER.

s0nia has been mentioned here, better known as s0fie visa

I know monica is visiting those pics are accurate and she shot a few scenes of shemale strokers in her earlier days

not to say you are a newb or not doing these things, but to be clear on your original post, i do use the eros authenticated as a positive sign, but i usually do need another thing to confirm that is a real person before even considering taking the plunge.  A youtube video (which seems to be more common now) where the provider says or displays the phone # is a good sign.  I think the eros authenticated process has something to do with video although i'm not positive.