I'm about to buy a 32" or 36" w/b mower for some island's at a elementary school. I can't justify/afford a DD hydro right now. There's also a hill about 300' long and about 15' high they asked me to price. I could squeeze the extra for a SD hydro but i'm afraid it won't perform well on the hillside if i get that area. My question is....what gear driven w/b has the best reverse? And the "none" answer won't satisfy me.