Some good Some bad fetures
The good features are that it works with Mac and has compatibility. There are features that iDVD was capable of that Toast is not - i.e. - not really seemless transfer from iMovie to Toast (issues here we could not solve) & you can not edit chapter titles and/or menus in Toast.
It works as a substitute for iDVD since Apple no longer supports iDVD and therefore is getting more buggy as OS X moves along. Hopefully Roxio/Toast can add some features to make it more like iDVD and then they can get higher ratings and more purchases.
Cavie about
Toast DVD