My favorite was Vivian from AGF/HAG but she's nowhere to be found now.  
Rachel from KD is always fun as well.  
Chanel was overrated
Looking to hear from others on their favorites. Both $$ and $$$$+

Ayana, Estee for incall
Sally's Spa for massage

Several top NY K-Girl agencies advertise there.

http://www.korean-delight.com/m/

IMHO, the tops is Ayana, hands down the best and at a great price.

I will second that. I saw her a couple of weeks ago and she was on top of her game and probably the best encounter I have had in recent years.

I've seen Ayana too and she is fab. Just tried to see her last weekend and received an auto reply email saying she is on Hiatus return date unknown.