Hi I'm just in the buizz and its alot of fun, I need to know some info on the quicktrak 647 by Deere. Is this a good mower or am I better off with a regular z-turn? Im getting brochures on them and I need pricing. Also my area is awfully hilly; so are these better and more stable than a regular z-turn? Im not made of money and anymore reccomendations are welcome. Thanks Guys!