why 900d ? imo the 350D or each other case would be suitable for your hardware.. the 900d is made for people using self built water cooling systems. it looks to heavy
because I'll be putting more than one GTX Titan in there, and I will be watercooling in the future.
Also, I like huge cases. Was spoiled when I was 15, had a full size tower (back in 1998 these were huge and rare for the average 'consumer' here), so I've always took a shine to the larger cases.
the 900D works just fine on air, too. Have filled this one up with Noctua fans for nice silence!
edit: your pic isn't working!
I went for the H110 (dual 140mm) due to the extra space available in my case, still have the H100 around that it replaced. need to get rid of that actually... maybe at OggCamp this year