So... I've been using the Note 20 Ultra for around a week. It is a good device. I don't entirely know if it's worth "upgrading," to from the Note 10 Plus though.
To quote Flossy Carter, "It's going to feel like you bought the same phone twice," in his reference to upgrading from the Note 10 Plus to the Note 20 Ultra. And honestly, it kind of does. I feel like the improvements are kind of marginal. The 120hz refresh rate, the camera in a lot of situations, and the slightly brighter screen. That's about it.
And in some ways, for me, it's a bit of a downgrade. I can use 45 watt super fast charging on my N10 plus. I don't like going from having 256gb of storage on my phone to 128gb on the N20U. Also... I swear, the speakers on the N10 plus seem louder. They seem so loud sometimes that I feel like the phone is vibrating. A lot of people don't like this, but I do. For 95% of the things the N10 plus does compared to the N20U, it's about the same. 120hz refresh rate is really smooth and cool and all that.. But I really don't like sacrificing WQHD resolution for it. I always ran my N10 plus in WQHD and it always looks amazing. On the N20U, my feelings are kind of meh for the screen at 1080. Sure, some of the things that the N20U does better is really nice compared to the N10 plus, but probably not worth paying 580 dollars for. I might give it another week or so and see How I feel since I got the device from Amazon.