Delighted to hear it, Nick! Good shared experience for anyone wanting to buy a 'music tablet' on a budget.
FWIW, I bought a tablet for music* about 2 years years ago without too many budget restrictions. Initially, I also had the idea of 'the bigger the better' and had my eye on a 14.6 inch Samsung tablet. But when I got one in my hands, it just looked, felt and weighed huge and cumbersome. And it was expensive. So I quickly decided that my eyesight didn't require such a large, heavy and cumbersome Tablet that wouldn't easily fit in my 'rehearsal bag' or be stable on any 'Tablet stand' I'd looked at. So I quickly 'downsized' to a 12.6 inch Tablet which felt much more 'comfortable; and with which I've been happy with ever since.
*I initially bought my Tablet so that I could play along with a 'Blues/Rock/Pop band' who shared lyrics, chords and annotations (solos) via digital files. So in this band, I didn't need to play sheet music from the Tablet. But I needed to be able to make my own 'digital annotations' w.r.t. what to play and when.
But in the 2 series of (10) 'jazz improvisation workshops' that I've been part of since then (both on bass and sax), I've exclusively read 'sheet music' via my Tablet (with a foot pedal). I had no problems
I still use 'printed' sheet music in my Big Band. Mainly because of 'the chore' of digitalising all my 'parts' (including handwritten annotations). And because I'm just lazy. But fellow members who prefer Tablets, use them at (approximately) 12.6 inches. I see - as yet - no inclination by my fellow members - to 'scale up' their Tablets to 14,6 or 15 inch. For the moment, it seems to me as if 12.5 to 13 inch Tablets are the 'sweet spot' for most (amateur) musicians.