Hi Jan,

I am very satisfied with my MVVS 1.60. It starts easily and has been totally reliable in 25 flights. I have had no problems with tuning. I don't think it has quite the power of the OS, (7300 with an 18x8 and Bisson pits silencer) but at half the price I'm not complaining. Of course this could be due to the fact that it runs on straight or 5% fuel too.