Personally, I'm still more of a fan of non-widescreen monitors. A fair majority of them are still around the 1280x800 range (maybe higher, but still about the same) so you really get less than with a typical 1280x1024 screen. And then I feel anything higher just throws everything off, seeing as most webpages and all aren't viewed quite right at resolutions higer than 1280 in width...
Eh... but that's my view on the it. I guess it's really down to personal opinions, and what the market has to offer. It seems almost every monitor today is widescreen... I shall hoard all my old 3:2 screens!