This generation of wheel from Habitrail is one of my personal favorites! It has regularly spaced grooves to allow litter to drop of onto the ground (instead of getting trapped in the wheel and creating a rattling sound like the Whirl-a-Wheel). The wheel can also be used in either a metal or plastic cage.
I have this funny feeling though that my hamster is a wee uncomfortable with it... don't know why... maybe its because the wheel is open air? Like the big wheel?... Nah, I must be reading my hamsters thoughts too much... Nevertheless, I think this wheel is a good buy and you should get it to please yourself as well as your furry friend.
I only have the Safari version of the All Terrain Wheel... I have not seen the other boxes in Singapore.
Hamster satisfaction: 
Maintainability:
Owner satisfaction:
