Fry's Electronics also has good prices. They have a store down in Burbank that I go to occasionally. Newegg is also a good one I have ordered from.
I have an Optiquest Q9(Viewsonic's budget line) 21" 4:3 LCD monitor and it is generally good, but it recently started having trouble powering up after about 1½ years of daily use. I did some reading and they have a tendency to overload some capacitors in the power supply circuit. Two of them were bulging and one actually ruptured. I was able to replace them myself with spares and fix the problem, but I doubt I would buy another Optiquest because of that.
I also don't care for widescreen monitors, but I guess that's another topic.