i think that people that have used the mk1 would want that more as most people dont like change, i read that the mk2 was discontuied due to too many faults, i have a mk3m and i would say it is the best piece of kit i have ever brought. as for the best place to buy them i would say on this website or rabbiters.co.uk for secondhand or a shop if ya getting new, everything on ebay seems to be going for silly money.