I like the HD60 I bought. It seemed to me to be the best buy for the money. It has good components, a decent warranty, and the deck is heavy. What it does not have that some of the higher priced machines do have is grease zerks on the wheels and spindles. That may make a difference over the years, but I beat the heJJ out of my last MTD riding mower for seven mowing seasons. I knocked the wheels off it several times. I replaced the front swivel bracket (axle) twice. I burned up belts by trying to mow what amounted to hay with it. The spindles were sealed and had no way to lube them, and I never had to replace them. In fact, I bet if I could get that piece of junk started it would still mow just fine.
Chuck