We have been talking new tractor. I want to stay away from Tier 4 equipment, so the question becomes whether to buy an older 30+ horsepower or a new sub 30 horse tractor. If you have a Kubota, please fill me in on how it works for you. I.E., "I have a 35 horse, but for the most part 26 horse would work." Or on the other hand, "I have a 25 horse and there is never enough power." Thanks!