I've been a fan of Maximumpc for quite a few years now. After reading the opening it reminded me of an article that was done towards the end of last year that the author of this thread may want to look at.
How to Build an Awesome Gaming PC for $647 | Maximum PC
Now almost a year later these parts are most likely cheaper. I would tweak these parts a bit though if you have the budget. Not sure if this will be of extreme help or not but I believe it should be viewed.
It's somewhat similar to DethRide69's build not exact mind you but nonetheless either choice would be good in my opinion.
Also don't be afraid to buy a larger watt PSU as this may be beneficial later on if you chose to upgrade a bit on this build be it a SLI or Crossfire addition or adding in better air cooling or HDDs.
I myself use the same PSU as DethRide69 and I love it to be honest. However it can be a bit much to a point I would suppose.