Ricoh gives the best stitching in this price range. But it can only take an image every 8 seconds.
Giroptic provides almost as good stitching, but not full coverage of the bottom. But images every 2 seconds.
Theta R is a version for advanced users where you have to provide a power source. It can do live streaming 24/7 and has better cooling. It should not be more schock proof, but you may be able to use your own m micro sd card. When they let it stream more you could hope that it will take more images/s, but I have not been able to find any documentation.