Argh. This is rapidly devolving into a ridiculous argument. The OP already stated his preferences. Also, it's darned unlikely that he'll be looking to use 30 year old lenses, no matter which brand he goes with. For the vast majority of people buying dSLRs, being able to mount 30+ year old Nikon lenses or 30+ year old Pentax lenses versus "only" being able to mount 20 year old Canon lenses is completely irrelevant.
And that bit from Wikipedia about setting apertures on "G" lenses - the OP is buying a new camera, not looking to use new lenses on an old camera! C'mon, if you're resorting to copy and paste - at least cut out the stuff that's not even marginally relevant.
And that bit from Wikipedia about setting apertures on "G" lenses - the OP is buying a new camera, not looking to use new lenses on an old camera! C'mon, if you're resorting to copy and paste - at least cut out the stuff that's not even marginally relevant.