f spaced or non f spaced pickups

ok so the one thing i get asked most by people on message boards of friends regarding guitars is, what is the difference between F and non f spaced pickups?So, to explain the difference between them we have to go back to days when the 2 biggest selling companies were Fender and gibson, the major difference between these brands is fenders tend to have trems on them, gibsons do not, the gaps between the strings on guitars with trems on are slightly different to those without, so the f-spaced pickups refer to "fender spacing" aka trem spacing.So basically if you have a trem/locking trem on your guitar you'll need f-spaced pickups, if you dont then you need non f-spaced, although i believe the differences in sound between the two would be negliable and the benefits are purely cosmetic :-)hope that helps you guys :)