well my last build is a micro atx case I think. Its got 4 larger bay drives and 2 small floppy drive bays. Stands up about 15 inches.....I def don't wanna go larger than that. And a buddy of mine just built one of those smaller box case pcs.....and he keeps telling me how quiet it is and all so....I have considered it but not sure if the video card is gonna fit.
Use is gonna be web, itunes, videos and mp3s, photochop, etc....I used to play WoW on my current build but vowed not to go back
but I might consider a game in the future