Ok It's been a full year now on the new prostance 52". It now has 520 hours of run time on it. Over all I am very pleased with gravely and the prostance. I plan on replacing our entire fleet with only gravely equipment. The ProStance only has a few minor defects that need to be worked out. In no particular order * Front Tires- they develop flat spots and thump when you start the day. Goes away after about an hour of mowing. Worse when its cold out. The dealer swapped the original ones once already but the new ones are just as bad. * Safety switches - They stopped working. The wires worked their way out of the connections. Again dealer fixed this issue twice but again they all stopped working. *Deck Foot pedal- Cool idea but not very useful since you have to manually release it every time you drop the operator platform. ( been told the new new model fixes this) *Gas Cap leak- Cause has me beat... Dealer swapped out the cap. Stopped leaking for a day. My latest theory is its the angle of the filler neck... Thought it fuel splashes up and it is caught by the cap... Its a breather cap so if air gets out so does fuel. Maybe wrong but its what I'm going with for now. * Operator Platform hits ground- Maybe its just us and our trailer set up but the tail end of the platform strikes the ground every time you load or unload. But than again it also digs in to the turf on some hills. I would like to see some kind of scalp wheel worked in the the end. Would fix that issue inexpensively. * Height adjustment wont hold 3"- Its weird it drops to 2.75 ". Again I have no clue why. Everything looks ok. All the other heights work great. 3" and you mow 20' its at 2.75. weird. The Good -- # Cut Quality--- Love it. Tall....Wet... Dry... Does not miss a beat. Only trick is to run gator blades on it. # Float Deck-- So much easier than the 1st gen prostance with its fixed deck. Once you go float you won't want anything else. #Wet Ground Performance--- Its unstoppable... well for the most part. My guys have only buried It twice. Trust me that speaks for itself. # Parking Brake--- It works... all the time not like the tire grabber set up. You put park on it ain't moving. #Hydro system---Smooth and responsive. The independent sides are a great idea. #Operator Comfort-- huge pad and smooth ride. A lot more comfortable to run than the 1st gen. Only complaint is no cup holder and no good place to put old fertilizer posting signs.