I have an X1 Carbon Gen 3 tablet. I have had plenty of issues, but the trackpad is the best I have used since my MacBook Pro, and I don't think a better trackpad experience is better on Windows. Also better than the Surface line, though those would be the next best IMO.
I don't think as good, but I don't know for sure since I never use the trackpad on my thinkpad. The trackpoint (little red dot) is just so much more convenient for me.
The only thing that makes me use mac is the trackpad and retina. I have 15" late 2015 mbp, so far the best mbp out there w/o the butterfly keyboard.
Im still considering to go back to thinkpad for my next laptop since i had t42p, t60 before.