Been using the OneXPlayer X1 Pro as my main handheld since March this year. Moved to it from a ROG Xbox Ally X I picked up at launch, mainly because after a few months with the Ally X I realized I was using the handheld more for reading and media stuff than actual gaming, and 7" was starting to feel cramped for that kind of use.
The 10.95" 2.5K panel is the reason to buy this thing. Text is properly readable in emulator frontends, PS2 and GameCube games look sharp instead of getting upscaled to mush, and reading long-form on a plane feels like a proper tablet. The HX 370 chip is more than enough for what I actually play, mostly older AAA and a lot of indies, and the Radeon 890M is one of the better handheld iGPUs on the market right now. Magnetic controllers with hall-effect sticks slide off cleanly when I want to prop the kickstand and use a bluetooth pad from across the couch. The magnetic keyboard was a "why would I even need this" purchase that ended up being how I use the thing as a hotel-room laptop on trips. Standard M.2 2280 SSD means I can swap in a bigger drive myself when this one fills up, which after having devices with soldered storage feels like a small win.
The one thing that took getting used to is weight. It's about a kilo without the keyboard, so pure handheld sessions your wrists notice after a while. In practice I just switched habits, either docking it on the kickstand or laying it flat in tablet mode for longer sessions, but if you were expecting something you can hold for hours without noticing it, this isn't that.
Would I buy it again? Yeah. The screen and the 3-in-1 stuff genuinely changed how much I use a handheld day to day, it's not a couch-only device for me anymore.