So here is my dilemma... in the past two years I have gone through two mowers... one was a refurbished troy-bilt which was almost brand new... The second was a refurbished crapsman. I have an lawn that takes about one hour to mow with a push mower. I need a mower that is reliable because my lawn is not very flat and will take some abuse from the terrain. I need some information on which motor is most reliable, which machine is easiest to maintain, and any other advice for picking out a new mower... I'd say price range is around 500.00.