I suppose in your situation you might be just as well off with the 42. Keeping a machine that long you wouldn't need to be as concerned with resale like you said. We also dairy and bale straw. You'll be happy to hear that you will be able to get very baleable straw from a Gleaner. We have learned enough tricks over the past 10 years or so that we can get straw from our R52 that you can't tell from a conventional. Ask your dealer to install the performance kit for you - it is a kit that extends the rasp into the discharge a bit further than the stock bars and helps to keep crop flowing through the rotor better. Any reduction in crop flow through the rotor will result in straw being chewed up. Ask him also to make sure there are All FORWARD rasp bars on the rotor - those reverse bars are evil things that slow crop flow down, will chew your straw up, and consume horsepower. Keeping the machine fed and running at capacity has a great deal to do with straw quality also - need new crop coming in to push old straw through. When we encounter oats that are down, and have to slow way down to allow the reel to pick them up, it will chew straw - not so much that the baler won't pick it up though (and not nearly as much as an Axial!). You are making a big jump in capacity from the 6620 so you just have to keep in the back of your mind to cut the beast loose and let her fly! The chrome cage in a 52 might help you some in straw quality, but probably not as much as the factors I listed above. Another idea - you may want to cut a crop of corn with the 42 before you tackle small grains - the corn will polish and smooth the cage making your straw flow through easier. Any more questions, just ask.... Best of luck, enjoy your Gleaner, and keep us informed! Tom langan