I can vouch for the G.Skill, been using it for my last two builds after using Corsair in my old old stuff (when it was just budget sticks) and OCZ more recently. Had 4 gigs of 800 running at 1066 stable on a gigabyte UD4P, and now have 8 gigs at 800 due to the AMD memory controller issue. Plus there is still 4 gigs@800 running strong in my last build I sold to a friend. No doa or dead after stress sticks so far... knock on wood =]