Right now, the best sets at a reasonable price are the G.Skill 2x2 sets on newegg. If you want fast RAM, consider the 2x2 PC-8000 set for $100 on newegg. Unfortunately, the D9 models people love are all in 2x1 configuration. While Micron made a 2 gig version of their D9 IC a while back, they are very hard to find now and aren't known to be as good anyway.