Right now, the closest thing I know of to media tools is simply to find the media ID.
DVD Media Inspector for OS X: http://www.digitalfaq.com/forum/showthread.php/software-media-id-393.html
As much as Mac users hate to hear Windows get "one up" on them, the fact is that Apple poorly supports DVD burning as compared to PCs. Mac is just not a great machine for DVD burning. It works, yes, but most advanced software is non-existant, and even the ability to reliably control burn speeds or update firmware is sorely lacking. Apple should know better. Part of the issue may even be based on the fact that OS X is Linux/Unix-based, another platform that has few options in this area. They've all but abandoned OS 9, even though many people (myself included!) still prefer it. I found X a complete aggravation and RAM/CPU hog (worse than Windows XP).
I'll ask around, see what any of my associates may know on this.