If I read your requirements correctly you want a case to fit:
Antec H100 watercooler with 2x120mm fan on top and
graphics card with Accelero Extreme attached
with good construction and dampening.
Antec P280 has been mentioned and is the only one that has it all.Coolermaster ATCS 840
is bigger, made from aluminum, but has no dampenning.Silverstone TJ-07
is a little bigger than the P280, highest quality aluminum case available, but no dampening and grills all around (+ nasty 92mm fans).Bitfenix Colossus
has 230mm fans and a lot of room.Coolermaster Cosmos
big, lotsa 120mm fans.Coolermaster Cosmos II
huge, more fans up to 200mm.
The TJ-07 doesn't seem to work well for air cooling. It's also a bit outdated. It doesn't come with any USB 3.0 connections (I believe its front IO's are also on the bottom of the case) and I'm not digging the price for what I'm getting either.
BitFenix's cases look like LEGO to me
. But yeah, in terms of functions, the Colossus will work.
After a bit of going back and forth, I think I'm set on getting a Cosmos II. It's a bit extreme in terms of price and size, but it looks to have everything I need. And I also find it visually appealing. The only drawbacks are the weight (49lbs!) and very low clearance for a top rad (you can only push or pull the H100, I don't think there's enough space for a push+pull).