I just bought the 1660 with DynaQPS 12 X 12. My hours are in the low 20's right now so I can't brag about what it does or does not do yet. I sold a John Deere 4500 with the power reverser to get this one with a cab because the only way I could get a cabbed 4720 deere was to go with HST and I didn't want that. I had a 4320 prior to the 4500 and it was a hydro, 2 months after the warranty went out, the transmission followed it, after I spent several thousand dollars and a few shouting matches with the dealer I went tractor shopping. Now I'm not gonna say that all HST's will fail if you work it hard, just the one I had did, there were several more inconviences, it was noisy, had more expensive filters, acted funny when oil was cold, and I could never get used to the brake being on the left side, etc... This debate could go on just like the Ford and Chevy debates always do and I"m not bashing the HST's, they are great for most hobby farm and general work duties, and cannot be beat for tight spaces when doing loader work and such, just don't hook up to a wide pasture conditioner and work it at max pulling capacity all day.
Dadioh, You have made a good choice, that is a strong and pretty machine, this is my first Massey and I can't believe that I have just been overlooking them all these years, I hope you enjoy it as much as I enjoy mine:thumbsup: