Ok I must be mixing up with someone else who got an Eco habitat and couldn't get on with it and switched to a cage
I'm guessing you're looking at that and the Marrakesch? Depending on the hamster I think I'd go with the marrackesch or even the maxi duna multy - which is basically the same size but a bit deeper and with curved sides! The Eco Habitat does give a huge floor area but the other two are maybe easier for access with top access.