If clearence with a CPU cooler is not an issue then I would look for the best rated at the best price and even if there is height concerns just eliminate the tall ram from your list of options. I have owned several brands of ddr3 ram and not one has ever given me an issue. Sorry to hear you are buying ram now because it is currently way over priced. The last 16 gig kit of ddr3 ram I bought was only 70 dollars US