My main reason for always recommending the MKII is that the tonearm on it has a much finer antiskate control than any of the other SL-1200 models. The MK5 and up models all have a 0-6 scale on the antiskate control whereas the MKII has 0-3 and is much better suited to home audiophiles use.
As someone has already mentioned, the only reason to order any other model is the upgraded wire in the MK5G. Even then, I'd prefer to have the MKII with the KAB rewire.
As someone has already mentioned, the only reason to order any other model is the upgraded wire in the MK5G. Even then, I'd prefer to have the MKII with the KAB rewire.