We have been thinking about up grading our loader. We have been thinking about going to a smaller HP tractor like maybe a 90-100 hp. Right now we are using a JD 4440 and a JD 4430 but both of them are getting up in hours that our on them and we are starting to have some problems with the 4440. The only thing we would use it for other than loading hay is running a round baler and a hay rake when we put up big square bales. My question is if any one has used these smaller hp tractors on their place and how they like them? We have been looking at a JD 6430, Case IH farmall 105U and a Case IH maxxum 140 pro. Has anyone used these machines before, or have used tractors comparible to these?