Can you tell us why he likes the brush hog loader better? What’s the price difference?
What ever loader you get make sure it has the universal skid steer attach. It will be well worth it latter when you want to purchase other types of front buckets or implements. They are available everywhere and easy to build if you like doing that sort of stuff.
I was seriously considering the M6800 but a local dealer offered me a M9000 low profile for about the same price. I needed the low profile to work inside my barns so of course I jumped on his offer. It has been a great tractor, really smooth, powerful, and quiet. The M6800 is almost the same tractor as the M9000 without the turbo and intercooler.
Good luck
Eric