FinalCut Pro and DVD Studio Pro are a step up for Macintosh.
For PC, a barebones but sufficient one if you want something really simple is DVD Studio Factory from ULead. (about $50 or so).
ULead also has several other versions of MediaStudio Pro, Sonic Solutions has DVDit! and Pinnacle has Pinnacle Express and Impression DVD-Pro.
A significant step up is Avid Express DV (about $1000), but has anything a non-professional would want for editing from DV.
For editing, many of these programs have limited or not-so-limited editing abilities. And another program, just for editing is Adobe Premiere.
I've only used the iDVD and DVD Studio Pro for Mac, and Media Studio Pro, all of which were fine, but at different price points depending on how easy and fancy you want to get.


