19" widescreens are roughly a 17" screen stretched horizontally.
22'"widescreens are roughly a 19" screen stretched horizontally.
oh, and 19" wides are cheaper then decent 19" standard LCD's
I use one LG standard 19" and one Samsung 22" widescreen. Side by side they match very nicely in height.
If I was going to run more then 2 I would go with one center 22" wide flanked by a standard 19" on each side. After that i would rather stack vertically because the width of you screen space would be huge. IMO
Oh and I recommend the LG-1953 very good quality and a slim bezel.