I agree ... IE is slow and NN isn't compatible with much. Most of the others are based on the Firefox renderer anyway, why not just go to the source.
I used to use firefox before IE had tabs now I use IE7 pro. I've been messing around with a browser called space time it's pretty cool especially the search function but it is little slow and awkward for my routine surfing. Interesting Web Browsers You Have Never Heard Of | Developer's Toolbox | Smashing Magazine SpaceTime
You'd know far more about than I do but since it's a different - hey maybe in name only! - browser, I voted "Other". Good browser too. Heck I even paid for the licence when it first came out on Windows years ago. Now it's free and available for Linux I'm very happy with it.