kingston is a very good brand. there usually used when people upgrade there prefabs and know very little about computers. they dominate that segment of the market (one of the few brands who sell there ram to places like best buy\circuit city\etc.)
although i like to point out im very pleased with my A-Data sticks
bought 4 and they all run good, and my first 2 sticks could run at 1080mhz, but then my motherboard couldnt take any more OCing so i had to stop there, so for all i know it could have gone higher
this is all for some of the cheapest RAM you can buy too. although the only complaint i had is its latency is 5, but raw speed beats latency.