I am slowly converting my turbines to kingtech! I got tired of out of control repair costs and loooong delays in service with the other brand. Last year I had a rough weekend in July. 2 out of 3 of my turbines acting up. One was my K-170 with 17 hours. I called Dirk at Kingtech on Sunday and he returned my call right away. Didn't waste my time trying to call the other big name turbine company that was acting up.after trying a few things we decided the best action was to return turbine for service. The next day both turbines went out for service. my K-170 and brand x 100. My Kingtech was diagnosed with a bad selenoid repaired and returned to me with a repair cost including return shipping of less than a 100 dollars. Total time door to door was 12 days!!! And has run perfect ever since. The other turbine despite being purchased new that year in January and now returned a second time Stijl not one good flight on it was not sent back to me untill the season was over in late October!