I have 2 Dc's both 10 yrs old with well over 4000 hrs on the units.I have replaced one engine but that was my fault. They still have the factory wheel motors and pumps on them.The only gripes I have are the decks and weight balance.Over all they are the best on the market(imo).They will go just about anywhere.Some say they aren't good on hills but depending on the tires they are as good or better.The guy running the mower has alot to do with how a property looks more than the mower I think. I like the stainless steel myself. I think it looks cool when its clean. Why change something that works.