I'll mention the same as other people... go dual core. Even with the slower core speeds it's well worth it for the way windows acts. So much snappier all around. And with software that supports both cores it'll spank pretty much any single core solution.
The only other thing I can see is that you are pretty weak in the video cart department on every system you've shown. At least if you are building a system you want to last. Splurge on a GOOD video card and it's one less thing you'll have to upgrade in a year or two. 7800GTX should be coming down in price since the 7900GTX is out in numbers now.
The only other thing I can see is that you are pretty weak in the video cart department on every system you've shown. At least if you are building a system you want to last. Splurge on a GOOD video card and it's one less thing you'll have to upgrade in a year or two. 7800GTX should be coming down in price since the 7900GTX is out in numbers now.