Anyone on the fence as to what engine to buy this should be a no brainer.I sent my DA50 in for the updates and was treated like I was the only customer...NO HASSLE.. NO PROBLEM.. NO CHARGE..I live in Canada so I thought dealing with a company so far away would mean providing them with all sorts of answers.Not a question Jeff at DA just said "SEND IT IN" so I sent it and within a week of them receiving it I get a phone call from Jeff to say "YOUR MOTOR IS FIXED AND ON ITS WAY BACK TO YOU" He didnt have to call me but he did which meant alot to me to know when my motor was coming back....THATS CUSTOMER SERVICE....Thanks Jeff and all the Team players at DESERT AIRCRAFT Rick King City Ontario Canada