I've had the 21" Cornerstone P1600 for about 1 year. It looks very nice and crisp. Everyone compliments me whenever they see it. There are a lot of cheap 21" monitors around here that pale in comparison. I haven't seen any really expensive 21" monitors though, so I can't be the best judge. I read a bunch of reviews when I made the decision to buy a Cornerstone brand (simply since it was an unknown name to me). Most reviews don't include any Cornerstone model, but the ones that did always ranked them quite high, if not at the top. Their prices are always low compared to other quality brands.