Mastering is a BIG topic on its own, and IMHO, using presets is a wrong approach to mastering audio, for several reasons. For example:


"The difficult part of mastering (and trying to create a guide like this) is that every effect, setting, and parameter is entirely dependent on the content of the mix, the genre, the desired result, etc. With this in mind, we don’t believe in products that fool you into thinking you can just select the “Hot Pop Master!” preset and you’re done."

That quote is taken from the "Mastering with Ozone" guide, an excellent introductory text to mastering, very useful and informative even if you don't own Ozone. You can download it for free here:

http://izotope.com/products/audio/ozone/support.asp