Not a problem.. glad I could help
In general terms the GTX480 is a higher-tier card than the GTX460. I've been reluctant to recommend the GTX480 over its direct competition, the Radeon 5870, because it's the better overall value (lower price, less power, less heat). The same goes for the GTX470/465 compared to Radeon 5850/5770.
The GTX460 is a different story - Nvidia tweaked the core GPU design for this new card, which increased the efficiency a lot. It's a much better value than its target competition (the Radeon 5830/5770) and even outpaces the 5850 in some places by a decent margin. For $200 you really can't beat it, except by paying $30 more for the 1gig 256-bit version. Hopefully Nvidia will put this revised engine in the 470 and 480 where it can REALLY shine.
As for the extreme processors, I wouldn't touch em. Just not worth it when you can get a decent overclock on the inexpensive one and it'll be just as good. Use the money you save to purchase a real good water cooling setup - that's a far more impressive way to make your machine a beast.