Note 8 is pretty outdated and under-specced. Either get the 9 or don't get it at all.
Processor, battery, cameras, etc.
The phones are good and all-around. Samsung user interface is the best in my opinion.
My only problem with the Note series is the size, mainly the corners. I preferred a rounder design.
Wait a few more weeks so that the new Note 10 arrive and the price should dip a bit for the 9.