I purchased a Fastrak with a 17.5 Briggs engine about 6 months ago. I never hear anyone mention a briggs engine when referring to their Fastrak on this forum. I have been completely happy with it so far. I am just a home owner and mow about a half acre. Would I be correct in assuming that the reason I do not hear much is because most of you feel that a Briggs engine will not hold up to the stress you guys who uses a mower every day puts on it? P.S. Thanks so much for the people on this Forum that have been willing to share their expertise and experience. You have been very helpful to me on a variety of subjects.