Metal Cages?

[hellobg]

Hello everyone!
After browsing amazon(DE/UK) and Zooplus for cages, I've found a few cages that I'd like to know if some of you here have already owned.

So first up I'd like to ask is the Montana Metal Vivario cages? I'm quite fascinated about this cage and it seemed really good. Will this type of cage last permanently? Since it's metal ? Or will it get worned down ?

I also took an interest in the Skyline Agadir/Marrakesh and I'd like to know if the wooden sides are already water-proof or pee-proof and can Hamsters gnaw through it?

Another question would be the Kerry from Skyline. I've just ordered them yesterday and I'd like to know your opinions on the Kerry.