I have never had a case I liked as much as my Antec sx1030. I'm currently doing tons of mods on it (well, not much lately due to time constraints, but I have big plans). Check out what I'm doing with mine (link to mycasemods.com in .sig) to see what I'm working on. By far, this is the sturdiest and most workable case I've ever owned - even better than my Inwin Q500. As others have said, spend a little extra to get a 400 watt or higher power supply, as you can stuff so much in the case that you'll probably need the extra power. Get the case - you won't be sorry.
RagManX