We have two 10" wheat hearts with 40hp kohlers, a bigger brant 20-45 belt and now a 12-39 meridian with 36hp diesel pusher
By far the brant has the worst mover on 20-45.. Don't go with that style, for wheatheart I have always liked there older style system, easy to maneuver and quick, as for the new meridian, also works well and handy,
Our wheathearts have worked well over the years, and like someone else said half the price of the latest meridian and than some.. We did have a gearbox go out on the older one, but newer one has been good, flightings is thicker for first few feet giving longer life.. Don't let anyone tell you 35hp is enough to for a 10 inch 40'.. Anything heavy or tough and you will be swearing.. Go with remote clutch, the hopper, and good lights.. Can't go wrong
Got the 12-39 median a few months back and it's pretty quick, close to twice the speed of the 10", and diesel motor has been great so far, starts in cold no problems, don't think I would go shorter than that.. And not longer than 45'
Got a buddy with a 50' 10" and swears at it every time, had to replace motor a few times because lack of hp and clutch a few more.. Just to big a load