I have two, and take care of many others for long periods of time. They have a 2x4 C&C cage with fleece, and trust me, I am never going back to litter. Fleece is just so much easier. Vaccuum it everyday, and throw it in the wash twice a week. They do have a litterbox full of carefresh, though.
Here's them, I'll post some pics of their cage when I have time to take some.
(Baaadd pics! lol)

(yes, my boys live in pink. (: )