An OBD scanner can't do anywhere near what a Pscan can do for our cars.
I run Pscan on a crappy small laptop from a charity shop, I threw a new solidstate hard drive in it and loaded it with Windows 10.
A small laptop is good as you don't have much room in our cars, and the fact that it cost be bugger all is a bonus as I don't care much if it gets damaged, just salvage the SS hard drive for reuse, bin the rest and get another lappy!
I use a SS drive as they'll take a bit of rough n tumble without shitting themselves.
I prefer a lappy with a keyboard over a tablet with just a touch screen because experience tells me that, touch screens don't always recognise wet, cold dirty or greasy fingers.
"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"