still got my newton [my first ever Apple device and it still works - dog slow though !] but the Palm and HP Ipaq were definitely better. It was the stylus input and poor interface that let those down and tried to replicate windows too much rather than create a tablet os properly.
I can safely say the iphone was a gamechanger in my eyes, but really was a development on palm and pocket pc [and a much much better development].
I am expecting the same to happen with AR.
Also had the original surface to get back on topic. I liked that device but also relies on the stylus too much.
I will always remain an ipad and laptop guy until Apple make the 2in1 version with detatchable screen. Still my dream device!
The real gamechanger was the Apple app store. The PocketPC relied on third party app stores to sell apps, used serial codes to register software, etc. What a PITA.