I use PDF Converter Pro from Nuance. My version is a little old. I have version 4 while version 6 is the most current version. Version 7 should be out in August according to a representative I talked to. This is a pay product, but worth the price I feel.
Attached is a sample that I just made. I have a paper I downloaded from the web that I converted so you can see the results.
http://www.nuance.com/