Probably the best surface (pro) up to the surface 4. Second-hand price is good for what you get.
All the bells and whistles of MS Windows 10, plus the convenience of a (slightly heavier than usual) tablet.
i have a surface pro 2 and i had the touchcover which is more of a touch keyboard and i wanted a cover much the same but with more of a keyboard type feel and this is what i should have bought first of all as it is an actual keyboard
although its very thin (hardley any thicker than the touch keyboard) but it has proper keys on it , they dont move hardley at all but they are so much more like a keyboard and it has a laptop style mouse touchpad on it as well , and it is also backlit aswell which is a nice liitle touch aswell so if you dont have a cover keyboard for youre surface then go for the keyboard type like this than the touch one as you wont want another one after this . it costs a bit more than the bluetooth ones but the qaulity is fab so it is well worth it