I used an M3D (and MK2) for 1 year but I have mine (and a MK2 M3D yet) for 1 month. Obviously not worth the rpter, that the j'apprcie + is the reliability of the product, no need to worry about = increasing problem ... There are not any! (Knock on wood!). J'apprcie a lot of weight bte ... with 13 kg must go to make them fall in tonight!. For info can be removed very easy the "notch" at 0 of MK2 for a pitch that functions as the M3D .. The button "on / off" Has actually seen, and believe me this is not because ngligeable dye accidentally MK2 often in evening, especially with a little excess!
I've bought used (810 euros for 2 with a cell Concorde DJ S boxed mix and a table that is worth 300 euros new), so forcment I'm not going to complain about the price, but otherwise it is a bit excessive ... 100 euros less to settle it right!
I do not know if I do it again this choice with the exprience ... I'm waiting to see whether competitors will benefit from the end of the patent until the dtenu by Technics ... and if the price will drop M3D!