I'm not a fan of going quad core just to go quad core. And although I keep seeing people say how more apps are quad enabled, I see very few that are. If you encode/decode or use a quad core compatible app 10% of the time, you still gain much more overall by going with the faster C2D 90% of the time.
Again, since overclocking will be considered by most gamers and a 3rd party CPU cooler was included with the build, the E8400 will do everything the E8500 will do and is a bit cheaper ($23 on newegg at the time of this writing). You can easily run the E8400 at 4GHz with that cooler and see no noticeable effect on your electric bill.
I'd have stuck the difference in CPU price in the HIS H485QT512P. It runs cooler, performs slightly better, and costs $5 more than the Saphire after rebate. Efficiency is the same.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161244
I'd also swap out the WD HDD for a Samsung F1 HD103UJ 1TB. Much faster drive, costs less, and uses slightly more power.
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152102
What people fail to realise is that by running the OS on the edge of a large drive such as this, the speed increases are pretty noticeable. I still think the SSD is unrealistic for price and performance at this point in time.
Overall, not a bad system TG USA chose. Minor tweaks on my part would actually save money on the build and get better performance though.