Missy Monroe was the hottest definitely.
Here's video of her topless and posing with any fan that came up. Super nice girl:

http://www.xxxpartycentral.com/movies/missy_monroe.wmv

Sylvia Saint was only nice when she was behind the table. If you saw her walking around the hotel or anything, she'd give you a really haughty look. Nasty personality eminated from her.