Currently using Dixie Choppers & 36 & 48" walk behind mowers. We do need a smaller mower on occasion. We have gone through several 21" trim mowers with little success. Almost one year disposable models. Have tried Toro, Honda and Huskvarna although I know there are several models to choose from. Too much plastic. We do have one bullet proof Exmark which seems pretty stout but spendy. Looking for opinions on the best 21" out there.