I bought one, kept it for a week and a half, then returned it. The tablet was stable, the screen was nice, and the device was light and quite portable, and in real world use it had long battery life. I has looking for a travel computer that could take the place of the two I currently travel with. On paper the TabPro S was exactly what I was looking for, especially with its good battery life.
I had two problems, though. One was the keyboard. I could not type accurately on that keyboard. I have easily typed on a variety of keyboards including undersized Bluetooth keyboards for my iPad Air 2 and the type cover for the Surface 3 (non-pro version). I'm a good touch typist and have never experienced as much trouble typing as I did on the Samsung. This was the true deal-breaker for me. Due to having to retype so much, my typing speed fell by half or more.
The other issue was recurrent hesitations and stutters. I hoped that the system would smooth out after it was done indexing, etc., but after 10 days of steady use, it never got better. I don't think I was working faster than the computer could work because of the keyboard issues I was having, and I don't blame the m3 processor because the Atom processor in my Surface 3, though slower overall, stuttered less than the m3 in the Samsung. Perhaps the processor was having issues driving the larger screen. Something was jumping in there and demanding processing time that interfered with the user experience to a noticeable degree.
UPDATE:
I picked up another TabPro S that was an open-box item at one of the local Best Buys. In contrast to the first unit, this one runs very smoothly, with no stuttering and a nice, quick feel. Even the keyboard is better, it probably has stiffer keys that don't auto-press as the earlier unit did. I'm quite impressed with this one. I didn't expect that much variation between units of the same product.