We had a choice between a 8680 and a TX66 we went with the TX66, partly because the 66 was closer to home but would have gone with either one. We have a farmer in this area the logged over 2600 hours on a TX 68 with little or no trouble with it, he traded it for a CX8080 last year. I do like the leveling shoe, (neat to watch in the field) as we do have hills in this area. However one thing I would change in the engine. Would have preferred the 8.3 cummins in the 8680 over the 7.5 New Holland in the 66.