I made my mind. The choice where: 2008 exedition 600 SDI, 2009 expedition V800, new XU 600, new XU 1200.

Pro and con of my decision
600SDI: Con: Oil price, oil smell, fuel consumptiotn, 2 stroke engine failure, noise,
Pro: Power, lighter weight, good engine, pull start, High engaging RPM of clutch in deep snow

V800: Con: Lack of power, timing chain, scare of dead battery
Pro: Very good Fuel consumption, no smell, no oil adding, smooth, less noise, impressive torque at low RPM, 4 stroke reputation, very good in deep snow, very good hill climb in the wood at low speed.

XU 600: Con: Oil price, oil smell, fuel consumption, 2 stroke engine failure, gearbox problems, plastic problem, tunnel crack problem front arms and strut and gearbox no protection,
Pro: Power, performance, handling on trail, pull start, lighter, touring handling

XU 1200: Con: Unknown in deep snow , Heavy weight up front, hadded torque on a weak frame , guinny pig first season trial, gearbox problem, plastic, what else...front arms and strut and gearbox no protection
Pro: 4 stroke consumption, , lots of power, trail handling like a touring

Interesting

Old fourstroke technology in an obsolete chasis. I'm assuming that it is also cheap to buy? Don't get me wrong if its purely a workhorse your in need of it should be perfect.

Deep snow, in the bush, on trail sometime, it just does it all, and it is a workhorse