I have a 508 and like it for its do all capabilities but I have had the opertunity to use a Pentax spot and like it better for spot. Used to have a Minolta and liked it for flash better and I still have an old studio deluxe with analoge meter that I like a lot better than digital.

Point is that there are better individual meters (for me) but I don't want to carry them all and the 508 does all the jobs ok.