That's a quite difficult question to answer mate. I have been there 8 times, each time with a different girl and could give you my view on the ones I met.
However they have 10+ girls there that I haven't seen. I am planning another visit soon with a new one.
OK, answering your question....From the ones I met, Kylie and Stella. Maybe there are others better than them but I haven't met them yet.
Depends what you're after.
This is purely my opinion based on my own experience and I think a lot is to do with how well you connect with them.
I've seen 13 girls there, some multiple times.
If you're after amazing GFE with a someone who makes you feel like they're genuinely into you, are a lot of fun with great personalities, it would have to be either Alyssa or Angel.
Alyssa has been my personal favourite at SL for a while, but Angel comes a very close second. I will be going back to see them both again.
If you're looking for an incredible body and the magic touch, then that would be Mikayla.
A Buttman's dream. Both Mikayla and Layla. (not saying they do anal. Just butts to die for)
There are many other wonderful women at SL who I can recommend too.