Pickup some pc2700 or pc3200 ram?

[sugajay]

Not sure if this was asked, but I did some searching and didn't find anything. I plan to pickup two 512mb ddr sticks. I was wondering if you think it would be a good idea to buy some pc2700 now, or spend a some more and get pc3200 while prices are low. I know 400 fsb's are on the way and I won't be upgrading my cpu/mobo for a year or so. I learned from the past that it's not a bad idea to pickup ram when you know it will appreciate in value. I'm debating between getting what I need and future proofing, and it's been killing me.