Great post and should answer a lot of questions for those getting started w/MP3 CD burning.
For those that use NERO or Roxio or one of the other popular 3rd party software setups it's about the same steps more or less. Whenever you create an audio disc it will covert those MP3's into wave files which standard audio CD players will recognize. This is great but takes up MUCH more space which means one can get about 20 or so (usually less) songs on a standard CD-R. When your head unit has MP3 capability it means the deck has the ability to read these files w/o converting them into a wave file. This means that you can leave them in the compressed MP3 format which allows you to have 10x the song files on the same disc. With the ability to have about 200 or so songs on one disc you can see why creating the files comes on handy. Otherwise you will be skipping through many songs to find that one song you want.
So, MP3 discs are great but require a little more effort to create. Overall it's less effort than burning 10 CD-Rs and having them all flying around in your vehicle and having to change them out to find a certain song. Time well spent in the end.
