I've heard two different stories about GFS pickups.... 1) They're a very good value pickup to upgrade a budget guitar. 2) They're very good pickups, worthy of any guitar... So, for those that are familiar with very high quality pickups and with the GFS line.... How do they compare? I have become fond of Rio Grande Strat pickups for their good tone with higher output. I've also used Kinman's, Seymore Duncan, G&L, and Lollar. Can GFS stand toe-to-toe with the high dollar stuff, and if not, why can't they? What would be the difference in the construction between the best GFS and a really good boutique pickup?