I can put in 2 cents for the Gravely HD 60 that I bought last spring. With add-on included, I spent about $5,700. Keep in mind that I upgraded from a 14 year old Huskee lawn tractor, but the Gravely HD is one heck of a mower for the price. It is one step away from the commercial mower which costs about $2,000 more with the same upgrades. I got the suspension ride seat upgrade and ended up putting on the mild ag style rear tires. The oem tires did not have enough control or traction for all the steep hills and wet areas that I mow. It has the fabricated 60" deck which is the biggest deck you can get on this model. This big deck does take away some of it's engine power compared to smaller decks, but it does add to its resistance to pulling wheelies while going up hill and I do not need the extra power for speed because my mowing area is more like a obstacle course compared to a Nascar track. I don't think I could pull a wheelie if I tried. I also added tow lugs to the back of it in case I end up face first in the many ditches and soon to be pond. The ag tires also help considerable with the zero turn's lack of control which they all are know for. They will tear up a finely manicured lawn if you get in a hurry, but are very easy on the turf if you can be patient enough through the tight corners. I'm not that patient, but my yard is not manicured either and I feel like my life is not at risk in some of the more risky areas of my property. I do know that there are no grease-able bearings on this HD, but the spindles housings are cast iron for more durability.
I would have looked at the Scag, but I don't have a local dealer and I did look at the Bad Boy mowers, but ended up hanging my hat on the Gravely for no real good reason other than the minor relationship I already had with the Gravely dealer who handles my Stihl work.
