I have a fop Ted and two hamster heavens (amoungst many other cages). I would say that the best cage is the hamster heaven, it is large enough for plenty of toys and a large enough (8 inch) wheel and the door is huge so you can get in to move things around and check on hammie easily. The fop Ted is a lovely cage, as happy saz says but it is hard to find and the smaller doors let it down imo. The fop cage is on the left in this picture, and the hamster heaven is on the right.

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