differences between pickups

just wondering....what's the difference in tone between seymour duncan alnico 2's, seymour duncan 59's, and gibson burstbuckers? what about seymour duncan invaders and seymour duncan JB's?

Here's a thread that came up a while ago about magnet types... Read my post... Post #4 http://www.guitartricks.com/forum/showthread.php?t=14626&page=1&highlight=difference+magnets

If you know the magnet type of a certain pickup... it tells you a lot about what tone to expect. All those pickups are medium to sub-high output pickups... The Invader is probably the hgihest of all... Meaning they have a little more bite "natural distortion"