I've used toro dingo, ditch witch sk650 and sk755, and I own a bobcat MT55. I like my MT55 the most but the sk755 is a power house. The only thing I didn't like about the sk755 was the location of the controls and it lacked the refinement the Bobcat has. Like the other guy said, I have used full size attachments on my MT55...I use full size pallet forks on mine all the time.
As far as justifying buying one...I could not live without mine. I can do jobs twice as fast with it.