I'm looking at purchasing a new mower in a week or two. I own a Laser and it is sweet. The problem I'm having is I can get a 2004 Toro557 about $800 cheaper then a 2005 Laser Z. I know the turbo force deck and the Ultra cut are pretty close. What I want to know is about the rest of the machine. The frame, hydro pumps etc. I know the gas tanks are a little larger and top end speed is a little more on the exmark. Does this mean it's closer to the Exmark As. Dealer support isn't a problem except I can't get a straight answer from either of them about the true differences. Any real knowledge, not opinions, about the diffrences would be greatly appreciated. Thanks.