Man, 3 grand to spend... wish I could do that :frown:. Anyway, since you have that much money and you're in for a gaming system, I'd have to actually recommend a P4 w/ HT. I love AMD and all, but the truth is that HT allows for a P4 to run much better in games due to their fairly linear code.
Saying that, I'm not really big on the Intel boards so let someone else recommend that all for you. The only thing I'd say is don't get anything that uses rambus.
If you still want to go AMD, then the A7N8X Delux has been shown to be the fastest board out of the nForce2 set, and the nForce2 chipsets have been shown to dominate all others for now. Then get some Corsair XMS and an XP 2500+ and you have a nice little system there. Add in an Audigy 2 and a 9700 Pro and you have a pretty nice gaming rig, hell, you have a pretty nice rig period.
But I still gotta end with, the P4 will give you better game performance straight out so if you want the fastet frame rates and such, go that route.