[kyrilliondaemon]

I'm afraid I have to disagree with the general consensus here. I have a chinese dwarf hamster in a duna fun at the moment and I think its the right cage for her, if anything I think the cage may have been a bit on the big side for her at first and wonder if she should've started in something like a combi 1 for a while and then worked up to the duna. Chilli is happy in her duna fun now but I'm pretty confident that she'd dislike a larger cage. I have dwarf hams in big cages but not all hams seem to want lots of space. Rufus (robo) is in a smaller cage than most of my hams too but again, I'm confident he'd dislike anything larger. Bertie (hybrid) is the exact opposite and I doubt I could give him too much space if I tried. It all depends a lot on the individual ham really.

Since you have the duna fun I'd give that a go first and see how things go when you actually have the hamster and can judge their behaviour more accurately.