S9+ is quite nice, I would rather pick the 9+ and not 9.
The difference is more than just screen size.
Samsung fixed the thing I hate on S8/8+. I hated the finger print sensor is located on S8/8+.
S9 and 9+ are not a big jump if you are already on S8 or 8+. Keep this in mind.
I meant it seriously about beta tester. All phones in the first batch could have issues both software and hardware wise.
It is better to let the phone on the market for a couple of weeks or max 3 months.
Note 7 is the best example about not to be the beta tester or early user.
However, Samsung is not dumb. I do not think Samsung will let Note 7 problems reappear. S9+ is a really nice piece.
As for me, I am still keeping my old OnePlus3 and HTC 10 for now, if...