The difference is obvious on LCDs. Very obvious.
Not just LCD's either - my mom picked up a gigantic gateway monitor from a garage sale for $20 (practically new, viewable area diagonal is 19 and 3/4 inches - 1 and 3/4 inches bigger than mine

). Hers, once plugged in, popped up the ClearType option in the control panel as well - standard BA (Big A$$) CRT. Definitely noticeable. Absolutely. Beautiful.
And I'm trying to talk her into me buying it for $40 - she uses MSWord, which DOESN'T do that monitor justice
As for browsers, I'm using FF. It's whats on my flash drive, its what I trust, and more importantly, its what I have configured to be secure for what I'm working with (as in, NoScript, AdBlockPlus, IETab, and a weather plugin). I'd be willing to try another browser (besides IE, which is what caused me to hunt for a replacement in the first place), but in all honesty I'd probably stick with FF because I've spent a while configuring it to be EXACTLY how I like it - I'd be starting all over with something else.
Same reason I didn't upgrade to Vista actually; I spent this long tweaking XP and making it work just right, and I don't like the idea of wasting two years to do it all over with a fledgling OS.
Sounds like Opera's the one to try instead of FF though; I'll put it on my ToDo list (which means I'll probably end up testing it by the end of the week (I actually complete stuff on that list, unlike some people

))