I have a HAF 912 and I love it. It could be a bit bigger though. It came with filters for the bottom and front, so I would think the 922 would have some. The left side panel of the 922 will give you some extra room for cable management that the HAF 912 doesn't have.
Also, if you're planning on an HD 6950 or a GTX 460, you can always look at a GTX 560 for around $250 USD.
Another thing, I recommend the Samsung Spinpoint F3 series for the hard drives. Both of mine are awesome so far, no problems.