Umm.......ive got a Q600n (same thing).....i got it from egghead.com when they had free shipping for $82.99...i looked recently and there up to 96.99 +6.95 S+H....whoa!.......yea the mwavw deal is pretty good......but you may want to check your local shops (if youhavnet already) cuz its a fairly well stocked case at comp shops......all teh shops around me have it in stock ( Im in RI)......you can see my site for lots of internal pics of teh cas and some modding ideas to it, again my Q600N is the EXACT same as the Q500n your getting except the front bezel.......so check out my site for more info.......
I also have a pIII 700e system oc'd to 945mhz presently witha Gorb.....my suggestion would be to plan on adding a couple 120mm's to this case if your gonna OC mostly for the sheer size of this case.......you need the power to move the air from within it... I love my case......and it is a BEAST!
Dicemans Q600N Mods
if you have aymoe questions about this case..you can either contact me thru my site or email me here
Contact Diceman
hope i helped.......oh btw: my power supply is a Powerman 300 watter and is a pretty standard PSU for this case....but beware of little sites that pull the switchy and give cheap PSU's instead...im pretty sure Mwave.com is credible though.....so you should be fine