hello I have the habitrail ovo for my chinese dwarf.
I agree it looks cool but if I had to buy my set up again I would probably spend equal on a larger cage like a furplast or gabber. I have two 'pods' set up lots of little areas for my guy and he seems happy enough. There is a lovely review which can reassure you
here
You can also read my continuing decisions h
ere
really hope that helps