I love the BH75 backhoe. Lots of power for it's size. Very impressed with it's capabilities. It goes through decomposed granite just as well as an L35 and a full size New Holland that I rented to start the "dig".
Check out the link to my pics below to see some of the rock ledge I picked away at to extend my driveway. When we moved in, we couldn't get any of our vehicles in or out of the 3rd bay of the garage because of the proximity of the hillside to the garage door.
Of the 155 hours I now have on my machine, I'd estimate at least 50 of those have been on the backhoe digging out rock ledge, tree stumps, ditches, holes for planting trees, a garage foundation, all sorts of site work, and even a grave for a neighbor's horse.
I expect you'll be completely satisfied with the Kubota backhoe.