Oh, no, don't misunderstand me. In fact, many many times I still go back to IE just because of one feature is has, one page it loads correctly, etc. IE is the only MS app I really like using (although, I'll admit, Word v.X has a decent interface, I don't like how everything's so buried). I am NOT just a Microsoft basher. I just don't like their overall app design too much. I mean, you compare Word and Composer. Just try it. Word looks great, Composer looks breathtaking. Word has a lot of features; Composer has most of them done RIGHT.
It's really just a question of the design you like better--Omni-oriented design (a la Composer)--a very clean, somewhat simple interface or multiple-function design (a la Microsoft) where you know you can do just about anything and it's all just a matter of finding the functions you want.
I think that if you do enjoy IE there's probably not much point in using OmniWeb. The only reason I switched is that I loved the OW interface. As for Word vs. other apps, try 'em all, see what suits your work the best.