I just recently ordered a refurbished Note 10+ from Samsung to replace my refurbished Note 10+ from Samsung lol
I think the N10+ should last at least another couple years. After that, honestly, I'd recommend a new device. Supposedly Samsung puts a new battery in these devices, but I find it hard to believe considering how bad my battery life has been.
I screwed up the display on mine so I just said what the hell and traded in my screwed up one for a new refurbished one. Cost 360. I would have bought the Note 20 Ultra, but I didn't feel like shelling out an extra 200 dollars.
Another good option that Samsung has for refurbished right now is the S20+ with a trade in of the N10+ for 450. The standard S20 with trade in is 360. Devices that are a bit newer. Just something to think about.