I got mine yesterday.
The supplied usbc headphones are shite, they have as much bass as a choir boy getting fiddled by a priest, and they hurt to have them in for more than 30 minutes. Maybe I have the wrong kind of ears. But my £30 jvc headphone (3.5mm) wipe the floor quality wise compared to the supplied akg.
The usbc is not universal, I purchased from amazon a usbc to 3.5mm headphone dongle before I got the phone that works on other androids thinking they would work on the Note10, it didnt, and Samsung neither supplied one or sell one that does. Looking now to see if there is one for the S10 as hopefully that will be compatible.
Still bloatware, no LinkedIn this time, still Faceshite, and now Netflix (not to bugged at that as I have a subscription, but like facebook, no excuse for it being a uninstallable system app).
One thing that got me, was the missing power button and the fact it doesnt say the front protector was supposed to be left on, took me 5 minutes to figure the bixby button is also power as well, sneaky way to get everyone to use that crap. I also pealed the screen protector off thinking it was just the initial plastic cover, like many did with the fold, just the note 10+ screen doesnt break if you do, you just wasted a perectly good screen protector.
Major issue is false screen presses (if you dont have a case to protect the edged from side of your hand. So I see there are limits to just how much screen to body you can have before it has issues.
Battery life is about 24h, and I am using it a lot with 9gag, firefox and outlook.
Major pain in the ass is 2fa app, now I have to re-register all sites as it doesnt copy the current registrations over. Cant blame sammy for that one and I see the security reasons for it. But it is a right chore.
Also depreciation on phones is as bad as cars, I got £200 rebate for my old Note8, given it cost a lot more and is only 2yo, that is a steep drop for what is still a decent phone.
Overall though, the Note10+ is a good phone, Bixby is less anoying and in your face and far more useful with its new routines (automated scripting to set phone in different times/locations). Microsoft support is just "Your Phone" built in now, so no different to any other phone.
I would agree with the 5G possible issues, I have about 1-2 bar at home (4G though), but on Note8 it was usually 3-4, still works for calls and text though, no dropouts.