What good are opinions? We need to know what you want out of your case. Weight? Size? Expandability? Ease of use? Window? Looks? Fans? There are a million factors.
Personally, this is my baby:http://www.thermaltake.com/products/xaser3/v2000a.htm
but I'm a fanatic. It may not be for you. Spend time searching the net for reviews on your case, and see what some actual users thought. I have found that these reviews have never steered me wrong. These are actual people, not salesmen, and not pictures on a box.
XP 2500+ Barton
2x512MB Corsair PC3200
MSI GF3 Ti500 w/64MB DDR
2x80GB 7200RPM Maxtor
My computer is bigger than your computer....