Let me tell you my story...
I used to be an avid Netscape person. LOVED the thing, hated IE. Was a rabid fan, in fact.
Then came the 4.x versions. IMHO, they were terrible. Kept crashing. The last versions I had would, after a month or two, just stop loading pages and totally hang up. I'd have to reinstall.
I got sick and tired of that and tried the old IE that had been sitting on my computer since we got it. Worked wonderful and it was easy to transfer my Bookmarks.
In short, even though I hate Microsoft (I can't wait to see how Lindows will work!) and loved Netscape, I use IE now. I don't know if it was just me who was having thee troubles or what, but all I know is that when I had to go back to using Netscape 2.02, I decided it was time to make the switch.
(As a side note, I also used Opera for a time and loved that little program. It's not big like IE and Netscape, but it's a hard worker!)