Go w/the OS you will not regret the purchase. I only have gas and electric powered planes now but I used OS products almost 30 years w/o problems or whatsoever. I had some other brands along the years, ST included, but that were really not up to par. If you had a good experience w/OS why change? Life is too short, and we have better things to do w/our time than fiddle w/junk

Gerry