Looking at trading a one year old 8010 for a new 9120 with tracks or adding a older Cat on tracks. We are wet and last fall was terrible. The way it looks is will be years before back to some normal as some ground has feet of water on it and just keeps raining over 3 inchs in last week alone. Looking for some suggestions on both options if we go the trade route what is the deal with the small tube rotor I have heard mentioned. Our crop mix is beans, corn and a little wheat with occasional acres of barley, rye, millet and even sunflowers a few years back. We run 40 foot head in wheat/beans and 16 row in corn running one grain cart on floaters behind Cat and hauling with 5 semi's. We are spread out a bit around 45 miles from end to end with the londest haul to bin site 30 miles. How is the transport speed of tracks both red and yellow? Are the tracks worth the money, like 70 grand more by time you figure it out with rear wheel assist and options or would we be better to buy a used Cat on tracks for the real wet stuff? If we go the Cat route what should a guy look for or stay away from?