I had that G.Skill ram and it was absolute crap. Corsair or OCZ from your list, or get some Ballistix.
I also like Mushkin Memory. It is well know for its overclocking abilities. I say go to the DDR2 thread (stickied) by Enterprise and make sure that the ram you are purchasing is made with Micron D9xxx chips.
And whatever happened to Kingston and PNY being the best? Or were they ever? I remember thinking back in the day that if I didn't buy Kingston or PNY, it was just cheap stuff.