I agree with the 2 in 1 observation, now I'm using an HP x360 with 13" screen. The CPU I have is an Ryzen 7 5800U (but it is an overkill, a 5500U should be more than enough, or an i5). In any case, I trend to buy laptops over specified and keep them several years. I suggest you to look at the generation of te processor, because there have been big improvements these last years. I would aim to Intel i5 12th gen or AMD R5 5th or 6th gen. But i3 or R3 should be enough now, may be not in 4 or 5 years.
Regarding the size of the screen, 17" would be nicer, I also use another 15" laptop and is better to read the music, but I use it on my Kawai MP11. Because the CL35 digital piano is so compact, the screen ends being near my eyes, so 13" is ok. Also, being a small laptop, the fan kicks in from time to time, but it is due to windows stupid tasks we don't ask but they are there (like randomly checking the system for viruses).

It is barely noticeable, but the score can be seen quite well (I just use edge in full screen, and Calibre to organize the files).
On the same piano, I used to have just a monitor and an Odroid N2 which worked flawlessly (and costs less than USD 100, running Linux). But I needed to have a mouse (needed to open the PDF files) and a mini keyboard because at the end of the day, the N2 is a computer and from time to time you need to write something. So I had the USB for MIDI, the HDMI for the screen, the power supply for both screen and PC, it was a little mess of cables, but it was OK and cheap. My current solution is 10X more expensive but easier to work with.
In any case, don't think that a Windows touch device is as good as an Android/iOs/iPadOS device. Windows as touch oriented operating system is terrible, it's a shame to have this operating system on such nice devices as laptops with touch screens! Pianoteq is not very adapted for touch devices either, but in compact mode and zoom at 175%, it is kind of OK.
Last edited by marcos daniel (05-12-2022 04:05)