I just stated using Omniweb 5.5 yesterday.
The one annoyance that I have come across is the there is no apparent way to subscribe to RSS feeds using anything other than Omniweb’s built in RSS reader, which is very nice in itself.
I know Firefox has a ton of extensions and a bunch of themes, but personally I just can’t get past the kind of gritty feel that Firefox has at times. It definitely has it’s use for me (especially the web developer toolbar, which I almost can’t live without), but for now Firefox is kind of a very close second place.
Normally Omniweb costs $29.95, but for the month of November it is on sale for only $9.95! Or you can give it a test drive and you’ll see what I’m talking about! Oh, but unless you’re on some version of Mac OS X you’re SOL.