I use Toast for general purpose burns, WaveBurner Pro 2.2.1 for compilation CD-Rs from different media with varying levels. I like it better than Roxio's Jam because WBP has a much better interface. It also allows you to adjust the sound of individual tracks, or the entire mix, with built in audio tools. One problem though, the version I use is for Mac OS9; the OSX version only comes in Logic Pro now that Apple bought Emagic (WBP's creator). Some on the WBP forums say that the OSX version isn't as good as the OS9. You may be able to find some places that still have a copy of the older version, or someone willing to sell.
Here's a link to a review of the OS9 version:
http://www.sonicstate.com/articles/article.cfm?id=50
Here's a link to a review of the OS9 version:
http://www.sonicstate.com/articles/article.cfm?id=50