While your concern of engine choice is there, the other trade-off is in the equipment itself. The X330 is simply a better machine. Deck, instrument panel, frame and warranty are all better on the select series tractors. With as few hours as you put on your machine, it would take a decade hopefully before you see any engine issues if at all. Staying on top of routine maintenance and avoiding ethanol in your fuel will go further than choosing a Kawasaki over the Briggs and just carrying on all willy-nilly! Either way, both good machines, but if you pick just based on the Kawasaki engine, you should consider other brands as well, since it can save you even more money!