My favorites as far as keeping goes has got to be the Florida blues. They eat pinkies at birth! You gotta love that. They also grow fast and huge. I have had a gravid female at 9 months old! They also throw huge litters and you don't really have to do any hibernating. Just cool them down to 60 degrees for 1 month and you are good to go. My favorite as far as looks go would be the melanistic eastern so I am going to breed my male albino Florida blue to my female melanistic and see what happens.
Wish me luck!
Ed