good for wide open, good aeration qualities, seems to lose hooks fairly fast, requires ballast in the rear of the ZTR for traction otherwise get ready for the most terrifying ride of your life on even the slightest of inclines.
I used to run one on a 52" Toro Z500. I can't say I was that impressed. It looks like a fine unit to have but I had no ability to do a quality aeration job on residential lawns. There just wasn't enough room to get up close to the side of the house and in corners along fences.
I would suggest getting a standard core unit or if you have the funds, look into Toro's new ride on aerator that was previously owned by Lawn Solutions.