I've been out of the game for the last several months but have been to all three agencies a number of times and can say that the providers I've seen at SVIPs have consistently been the highest quality,not just in looks but the overall package.I've personally TOFTT with several that were new with no pics up and not been disappointed.
That said,I've met some amazing women at other agencies but it's been mixed in with some big misses as well.
In terms of going in blind,if there are things that are a no-go with you in terms of looks or body type,just mention that before you book and the phone staff at SVIPs will give you an honest answer and give you a better suggestion if your first choice might not work out.