WyoBob give SeaMonkey a shot, I find it to be very similar to NS browser.
I'm on Sea Monkey right now, giving it a week. It has a few nice features that I wish FF had. but I still might go back to FFI use Firefox mainly because I'm used to it. Tried Flock and didn't like it but I don't recall why. It was quite a while back so maybe I would now. I like Opera and have been using it off and on for years, even when the free version had adverts. I've used Sea Monkey in the past and its fine. Usually use Safari on my Macbook but also have Opera and Firefox as well. On one of my Linux boxes I use Firefox with the 3.0 Netscape theme that brings back the old days when I used Netscape over IE.
Sea Monkey does that tooFF is the way to go. The Add Ons are awesome. Foxmarks is a great bookmark tool that keeps you bookmarks on a server and you can download them at any computer your on. It also synchronizes your bookmarks as well. Not too mention Firefox has automatic Spell Check that will underline the word and offer corrections just like MS Word. Best Browser out there.