ok guys, I have a question...

I just migrated to vista x64 so I can now access all my available memory and I'm considering the move to 8gb.

My question is which will perform better:

4 gigs at 1200+ MHz (which my tracers do with ease)Or
8 gigs at 1000 MHz
???

What do you think? 8 gigs of ram for under $250 sounds like a screaming deal to me!