I never read any reviews so learning as I go along as
@ntemples1 says, I am super impressed. I haven't bothered with a screen protector. It was shipped half way around Europe sitting in its case and no protector, and not a mark. Simply keep it in its case. Unless you are planning to take it to the beach, lob it in your bag, then a protector might be wise!
Whereas I would definitely recommend picking up a cheap Bluetooth Keyboard and Mouse to make life easier. Currently learning which games work, my main purpose of purchasing was driving sims which thankfully, work really well and super impressed - the flappy paddles for throttle and braking are decent!
Not sure about FPS games, classic's such as Doom will work better as less axis, aiming but then it might be me and my rubbish skills! I can feel the lure of dabbling with some oldies, and learn about installing Heroic to access my GOG library.
Whatever game you are paying, games which have a decent HUD are an overlooked benefit, but work so well!
Next steps is to figure out if you can install patched Steam games. Power and Glory is a superb mod for GT Legends, and GTR2 received load of fixes which elevated this super game to sublime. Also the Silent Patch to restore the knobbled Steam version of GTA Vice City.