hammer,
great question, i wonder the same things... from my limited knowledge beyond my personal love of Gel Fusions, there are two top end foot joys, and i believe the difference is rooted in the sole being leather or not. can't remember which is which, i'm sure that is on footjoy's sight. This store seems to have a great selection and it's prices on the gel fusion blem's look good to me, i don't know about the dry premiere, etc...
http://www.golfshoesonly.com/catresults.aspx?cid=24 Good luck! if you walk i hear the top ends one are the best, i am a bit tight on funds to fork out the extra 70 usd... peter.