Mushkin is good mem, I had them before, I upgraded to PAtriot and these guys use Samsung on the 3200 and the 4800, I know cuase the tech told me. Any one that has samung should be good mem, you can get the xtreme that use samsung. Read some review on Mushkin xp 4000. Here are a few links that I found that you can read about the Mushkin RedLine
As I read the reviews, Mushkin came up from a long way when I used them, they are good mem, and I would be getting the chip now I would get the RedLine ones got great reviews and they go good with the DFI Expert. Let me know what you got and how you are doing with the mem.Good Luck.