I think there's no 'best' RAM. It would depend on your individual needs. I wouldn't know off-hand what would OC best on your board, so I'll leave that to the experts. Generally, I think you'll see a lot of Corsair Dominator, OCZ Reaper, Patriots.. DDR2-1066 are great bargains.
Thought I'd start ya out.
E8400 @ 3.6 / Corsair 750w / EVGA 750i / eVGA 8800GT SC / Xigmatek 1283 / 4GB OCZ / Samsung F1 750GB / Samsung 22" & 19" / TT Armor / 1TB external / XP Pro / DIY surround sound w. 3 subs