Just to add - if you like the tank style (and it may be more familiar to the hamsters as well) there is a larger size duna cage - the duna multy. And also a bigger one - the maxi duna multy.
https://www.portonaquapet.co.uk/shop...a-Multy-M36261
https://www.amazon.co.uk/Ferplast-Ma...3346285&sr=8-1