We have a 9760 and a 9610. I like the STS but the 9610 still does a good days work and works side by side with the STS. If the header is not the limiting factor we can run about 1 to 1.5 mph faster in the 9760 with a 35' head than the 9610 with a 30' head. I would buy another STS but am in no hurry to get rid of the walker. Contrary to what many say, if they are both adjusted correctly grain sample is about the same. It takes a little more skill and operator awareness to set the walker correctly - the STS is a little more forgiving on settings. Rotaries like their power. Quite surprising to me was that the STS is a corn eating machine. It looks like to me the walker ought to be better in corn as walker loss is usually not an issue but the STS will eat an unbelievable amount of corn. In wheat and beans it depends on the conditions. Tough beans or wheat can soak up a lot of horsepower in the STS. They are both good machines and the fact that most of the world still uses walker machines instead of rotaries kind of says walker machines are still very usable. For what it is worth, outside of the better seat and the preset buttons for header height, I would still rather get in and run the 9610. I think they took a giant stride backwards when they put the CIH hockey puck hydrostat handle in the JD STS - but I am sure I'm in the minority with that point of view. I think the T handle is lots more natural. John