Our Country Boy set has Alnico III and the Yardbird has Alnico IV, both of which sound alot nicer than the cheaper Alnico II. We very rarely use AII these days as it's sonically inferior to Alnico IV-alot of the bigger manufacturers use AII for their vintage applications because it's very cheap and resonably low output. Alnico III(or at the very least generic alnico as it was called int the early '50s)is vintage correct and sounds lovelly and transparent-punchy too but low output and therefore little string drag. Alnico IV is simply one of the nicest vintage magnets IMHO, balanced with just the right amount of power and non of the AII 'mush'.
