www.online-mastering.com

I thought the masters turned out well. Low end was nice and punchy, very clear across the spectrum. However, I didn't have anything to do with the final mixes. I only worked as the digital editor/programmer for the album. So I cant judge on the before and after, just the final masters. I might be able to dig up some clips.
 
Ive never tried it but their pricing method is pretty dumb. Mastering 19 tracks is $1896.96 but 20 tracks is $998.40