A friend of mine has had some luck with Toast by Roxio, he's trying to upgrade to I think it's called Toast Titanium or just Titanium.
They have a Nero version out for the Mac if you can find it, it's only sold with a burner but I have seen as a download on the web.
Others to check out are:
B's Gold
http://www.bhacorp.com/
Discribe
http://www.charismac.com/