The EL OCZs are extremly powerful sticks. Running at a possible 480MHZ CAS2 is no easy thing, but they are capable. Also they really permit high overclocking for the A7N8X, at least based on Copenhagen's system, in his recent posts about his overclocking with water cooling.
I highly recommend the OCZ EL Dual Channel edition RAM.
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I just switched from the Corsair Twinx to the OCZ Dual el PC3500 and all of my memory problems went away. I'm now able to run the system stable at 200+ FSB. ( 5 3 3 2T) I'm still playing with the sweet spot for the CPU.
Right now I think the OCZ dual el is the best for the Nforce2 MB.