Got nubs today. Initial impression is that the small one is tiny, and the bigger one as expected. The bigger one chafers more, and is louder, feels less springy than the smaller one.
I prefer the force feedback on the bigger one, but the smaller overall, since it seems to be able to click at full extention, whereas the bigger nub cant.
Dragging while click works on the smaller one, but feels like im ruining the nub on the bigger one.
With smaller nubs there is room for two columns of keys in the middle of them, so that you can have
Select Ctrl
Start Alt
as dedicated buttons. Also that is the orientation of start select found on classic controllers.
Edit: the click is also more treble and louder than the smaller one. Dont know what version i got though.