06-22-10: TvadThe Mk5 doesn't have the better tonearm wire; the SL1210 M5G and SL1210 GLD have the upgraded tonearm wire.
IMO, the only reason to buy the MK5 is for the better tonearm wire.
This is a significant upgrade. IMO you should either get an SL1200 mk2 from KABUSA.com and get the tonearm rewired at the same time, or get an M5G. The wire in the KAB rewire is almost certainly better wire (Cardas) than the upgraded Technics, but I have had the M5G for 3 years with no complaints.