I have been running a 66 Triton for over a year and wondering why people didnt like them. Two weeks ago, I got a used TTHP with the Tri Vantage deck. It works OK on some grass but not all. Now I realize why people double and triple cut with those decks. I put a brand new set of hi lift blades on and it still leaves stringers even on the best of lawns. My Triton requires only one pass when properly bladed and the cut is superb at one pass. I cant speak for the Ultra cut deck but I cant imagine a better cut from it over my Triton. I am so glad I bought a used TTHP because if I would have bought new, I would be pissed right now.