Well, if you want tight timings, and you want some good ram, and you want it at a good price, and i'm guessing your going with Newegg?
Then I may suggest to you the OCZ EL PLATINUM REV. 2 ram.
2 1 gig sticks
2-2-2-5 timings, but requires 2.75volts to operate.
$167 from newegg
[Edit] my bad, it said rev. 2 1gb (2x512) i thought it meant 2x1gb.....leme go recheck[edit]