I was considering getting a couple 512 MB DIMM's using Samsung K4H560838F-TCCD modules or the like and I don't know if any brands are significantly better when it comes to boards and assembly but PQI for $250 shipped looked relatively good compared to some of the "specialty" brands. But then Crucial can be had for the same. Then I saw PDP for $225 and their slightly slower LLK for $190. Finally, I stumbled upon Kingston for $222 after rebate from zipzoomfly (untill 12/6) so if I do pull the trigger there really isn't any question.