XO referrals?  Absolutely horrid.  They burned me so bad I'm still wincing from it.  Their ads are masterworks of deception, the pics cleverly hide defects, the ages given are fantasy.  I've seen three providers through this so-called "professional" agency and they were all woefully inadequate: disheveled or drunk or plain nasty.  
   
 They are slick though, I'll give them that.  Know how to separate you from your cash ASAP.    
   
 But really, they are a low-rent establishment trying to pass themselves off as some "high-end" biz.  The girls are far from classy.  Think more a double-wide trailer with a hand-written sign above it.      
   
 Sure, I'm basing this *only* on my own two experiences: a threesome with Sasha and Krista (who were plastered and stinking of cigarettes) and Sydney Sinclaire (a lady with a lot of hard miles) and, of course, YMMV.  
   
 But if three should fall so short, I doubt the rest will somehow be fantastic.  Even when testing the PH-balance of an olympic pool, you don't need to sample more than thimble-ful.    
   
 PS -- PM me and I'll be happy to share more.  I honestly don't want to see another hobbyist made a victim of this agency.