mpdcop353, I have a Kodiak SD 5' with a slip clutch that I use on a Mahindra 2816. I think I bought it in 2011 and is my first brush cutter. I was on a budget at the time and $990 seemed very reasonable. I have certainly put it through its paces cutting autumn olive trees on the farm. I have a few small dents in the deck, but that is it. I adjusted the slip clutch to match my tractors PTO and I think that has been my saving grace. For small compacts, I would recommend this cutter. Anything over 35hp, I would be looking at a medium duty or larger.
The weight of the SD 5' is ideal for my Mahindra. I think it is around ~515 lbs and is perfect for my slopes. I don't think you would be disappointed in the least. If you plan to upgrade tractors, you might want to consider that as well. From my experience, the Kodiak line has been very good. My friend also has a 7' HD on a 62hp Massey. He has not been gentle with the cutter by any means and it has held up very well.