Motorized, Programmable, Panoramic head w/Bracketing?

I'm wondering if anyone knows of a motorized, programmable, panoramic head that will perform bracketing, for spherical panoramas. Ideally, I would not have to babysit the setup: so I could potentially move 100+ feet away and the thing would work without me. And, it would be great if it was fast.

I'm thinking for a 6D with 40mm pancake, but also potentially the much heavier 5D3 and heavier lenses.

This would not actually be for a traditional "landscape" photography, but rather for construction planning. Being able to get out of the way is pretty important when scouting bridges, as it would drop the minimum required number of crew members from three to two people in simple situations.

Wow! I should clarify something (after doing some research online) . . . I am looking for a budget conscious solution.

To give you an idea of where I'm at price point wise . . . the Gigapan Epic Pro is really pushing the limits. The CamRanger system (CamRanger, with PT-Hub, and MP-360) is a pretty comfortable price point. But the MP-360 only has 15° of tilt in either direction (up and down), which I just don't think is enough for my purposes: especially if the camera is mounted horizontally.

I've just replaced my epic pro with an iOptron iPano.

Both can be setup for bracketing, though usually i find it simpler to get magic lantern to do the bracketing on a single trigger from the head.

Radian 2? I think you can control bracketing if you have a Canon. It's for panning timelapses, but it's programmable with bluetooth.