I have taken both. I didn't like AP, because of some gastro issues. There are a lot of people here that have loved it. Glycobol I love with no gastro issues. As Guejsn said they have different ingredients, so something in AP is what did me in. The only way to know is try them both. Glycobol has a trial size on Nutraplanet, so you don't have to buy the whole thing and find out you don't like it.
Check out logs and possibly try them both separately.