I'd go for the $1000 CPU! I'd install an engine, tires, maybe a few seats on that processor and use it to drive to work, whilst I do some gaming and work on my spreadsheet.
It only overclocks to 4 GHz, what a waste. That may seem to be super fast, but I mean what a waste of money. It's only a 25% overclock. In comparison, my E6600 maxes out at a 63% overclock.
I'd like to see some overclocking results with dual core 45nm chips though. That should be more interesting.