I agree with Longshot - Katerina Talise has a perfectly sculpted arse. She ranks with Nina Hartley IMO. The rest of her is smoking hot toned perfection as well.
Another wonderful sight is the caboose on El Paso's BrittanyLove69 - http://www.eccie.net/providers.php?do=view&id=38796
I had the very good fortune to see this gorgeous young GFE back in March. If you are going to El Paso she should be tops on your list.