For DVD conversion, I use DVD Decrypter + MeGUI. It can code in XviD or x264 codecs. As far as editing goes though, it has almost no ability as it is more a tool for DVD conversion. You can cut out beginning and ending credits, that's about it.
I used the one bundled in the Nero 8 package before. Nero Video? I can't remember. It's alright. Fairly buggy, but I had a better experience with it than Ulead tools.