Duna Multy sounds like the right one for you. EquineCanineFeline is fine now by the sounds of it!
I have a Duna Multy for one of my Syrians and its a great cage, very sturdy and certainly loads of room for a pair of robo's. I personally don't agree that the plastic is too thin and I got a nice blue one
. Anyway, colour comes down to personal opinion!