I am planning on the same thing, moving my current rig, (Yeah Q6600, still running), into a mAtx casing, of course price is my number 1 concern, below 75 dollars in total plus the additional fans.
Short list a few of them based on local pricing
1. MS 120 ($62) OR 140 ($59)
2. Fractal Design Core 1000 ($59)
3. CM Elite 344 ($59)
I had ask nigel for his opinion on the 3 of them and he had recommend the Fractal Design Core 1000. There is quite a number of extensive review online on this model. Based on the price i think Core 1000 is our best value for matx casing one can get locally.
What you guys think? Hope i can find my answer in this tread also