Good sized case with decent dust filters?

[UTmaniac]

Would appreciate advice on cases <£150 that could house a big graphics card like a 7970 Matrix, which comes with very few points of entry for dust.

Thinking about a pre-built water kit like the Corsair H75/100, to be used on upcoming upgrade (almost certainly Z97 with 4790k).

Even better if it has a "minimalist" look, without bright lights shining through everywhere, a side window is something I could live without too.

 

[UTmaniac]

Looks interesting, still trying to work out if the Demiflex dust filter kit enhances the dust barriers, or simply replaces what comes with the case from Corsair.

Really want to get this case right, my current pc sits in a Lian Li A-10B which is a nice case, but I had to attach the top case fan on the outside because of the monster Noctua heatsink and fan.