Well, I own a Sony G400, got it because of the dual inputs, saved me KVM money. But, only six months after I got it, the darn thing died. No picture at all. Anyhow, had to ship it to Sony at my cost. They did fix it and get it back in two weeks, which aint bad. But, I don't much like having a 70lb moniter that seems to be flaky.
I checked around with many techs and tech sites while it was at Sony and it seems in the past year, Sony is getting MANY more 19" and 21" moniters back then ever before. They seem to be very sensitive to voltage flucuations of almost any amount, and thats killing quite a few of them.
The picture quality is top notch, and having used several Samsung 900NF's at work I have to say the Sony really is much cleaner at high resolutions. But, if I were to purchase now, I would not go with another Sony. Too troublesome. I'd go for a NEC or Mitsubishi, even the new Philips are sharp. The Samsung is nice, but their picture quality is bested by many other makers.