If you go widescreen go 20" instead of 19", just one inch but higher resolution (1680x1050 vs 1440x900) wich means bigger desktop, smaller pitch and more definition.
22" screens have the same resolution as 20, so you just get a bigger screen wich is good if you have a huge workplace
I just have a ViewSonic VX2025 and it's great. They make great screens and have great support. Overall quality is awesome and it's good for almost everything, movies, gaming or editing pics.
Samsung also does great screens but their support have a very very bad rep (at least here in Spain), it takes them 2-3 months to fix or change a fucked screen.
