Since your in the Mahindra section, I suspect you expect responses on the Mahindra side of your question. When matching a tractor to a cutter, or matching the cutter to the tractor, there are many variables to consider. Age of what you are cutting, its make up, hills, slopes, speed you want to cut at, etc. Yes, no question a 4500 Mahindra will handle a 6 foot cutter. Yes, no question a 5500 Manindra will handle it better, and you can cut faster. I have a 6000 and pull a 6' 3pt and a 10' pull type. It will do either, but at different speeds, depending upon what I am cutting, how short I am cutting it, and how fast I want to get it done. You may want to consider your other uses. It is possible to get too big of a tractor, both in size and hp. If you want or need a smaller framed, lighter tractor, the 4500 would fit the bill better. It still has good hp with the smaller size. When you go to the 5500, you get a bigger framed tractor, and frankly, if you are thinking 5500, you must also look at the 6000 and the 6500. They all three are essentially the same except the hp and the price. I have a large number of acres to take care of and my 6000 does the job, but I could go larger because manuvering, etc is not really an issue. I will put alot of hours simply cutting field grass and hay. With 30 acres, look at what percentage of your time you will be using the tractor to do what jobs, then gauge from there what will work best and be most cost effective. The Mahindra product is sound, solid, and cost effective. You can read through the posts, but what you have is a tractor that does not have all the options or conviences of others, but gets the job done. The overall majority of people don't really spend that much time acually operating the tractor, so keep that in mind. If you put 100 hours on your tractor a year, thats about one full day a month. Think about it.