Anyhow, you are correct. I haven't spent any time in the cab of an STS. If I get the opportunity to be around one, I doubt I'd really want to be in the cab - what can you learn from in thereIJ How well the air conditioning worksIJ I base my claims on what Deere themselves say (tines for fluffing and stirring to break up compacted crop material) and the rock protection thing is from numerous postings in the past on Machinery Talk. A few guys even said that is what took Deere so long to intro a rotary - that they were having trouble with rock protection. He also said that the STS was intro'd before they found a cure in response to the CAT. If it were just one guy saying these things, I would brush it off as someone blowing smoke, but when numerous different posts are found saying the same things, there must be something to it. last fall there were two different posts on M_T from guys who said they got rocks in their STS's. The rocks get into the tine area, breaks one or two tines off and starts a chain reaction. Both of them had their rotors explode causing massive damage to the machines with repair costs amounting to $15 grand or more. To be fair though, a guy that farms about 5 miles from here has a 9650 STS and he claims to be happy with his. Rocks are generally not a major problem in these parts though.... Take care- Tom langan