Hello Rebhana, yes the Note is presently my main mobile computer, even if all my NITs are still in my heart (and in my drawer, in good conditions, ready for hacking).

I've copied the debian partition from the Tab to the Note and in terminal mode it's quick; cli programs like imagemagick run very well.
Performances are not as good in emulated X11, and I don't think it's depending on VNC; there might be some problem maybe due to the lack of a swapfile at the kernel level. Or, maybe trying an ubuntu rootfs might give more speed... dunno. Lately I haven't used debian applications that much, given that userland android apps have quite a good coverage of my needs.

I can't comment on the Note as a phone, because I use it exclusively as a tablet, having another sim card with a cheaper plan for voice calls in another phone.
As a tablet, I must say it's lightweight and has a convincing form factor, and I have no nostalgy of the 7-inches Galaxy Tab; the difference in size is not that big to make my presbiopsy cry for new spectacles.
As I wrote some posts above, there are some issues: single speaker only, and display is less impressive than advertised; also, in charge saving mode, display hue cycles between slightly greenish and slightly reddish, which is quite distracting. Hopefully, when excluding this power save function, display tint stabilizes

Android apps I've selected in the last few months run well, without hesitations or stutterings; there is a definite increase in speed in comparison to the Tab, especially in web browsing.
Pen input works well, and is useful in everyday activities like preparing the grocery list or letting my 5-yrs-old daughter sketch same drawing when bored.

All in all, though, I am pleased by the device, and feel like advicing it to friends, especially when costs will drop a few.