What is the best media player for me?

I recently converted my entire music archive (5500 songs) from WMA format to MP3 files. this has freed me to non-proprietary encoding formats. I have been a long time Windows media player user and am looking for a good alternative. I have looked into iTunes and like the features such as native burning support where audio, MP3 CD, and data CD are offered. I dislike the Apple store and other related commercialization. I often use MP3 CD's in two cars and would like a similar experience. I am intending on using MP3 format only to avoid migrating my media twice. Free would be nice! what would you suggest?