that zalman is nice but its pretty similar to the thermaltake only it has the extra card reader bit and more fans.....
Now the card reader might be useful but i doubt id use it that often, especially for a htpc. The Extra fans only means more noise as far as im concerned.

Plus its £100 more :/

and yeh i remembered someone said they had a nice htpc but for the life of me couldnt rememebr who or what.