I must say I am disappointed with MS offerings in 2019 other than SP7
As Q-6 notes, know your poison with the SPX and even the SL 15" but someone needs to start the ball rolling
We can see in some comments above experience have been marred by faulty display units lack of understanding and even putting it in to tablet mode
However what seems worse is assuming the Surface line of tablets and others are expected to behave ala IPads
For many opting for a full OS tablet is too get away from coffee table toys and embrace a form factor for convenience and not to mimic a mobile platform short comings over being able to swipe with mits the size of a bunch of bananas
It does not matter how smart or fast an Ipad is, it simply cannot run the wealth of professional software available on a full OS, if this is not key to you then enjoy a Mobile Platform OS.
That works both ways. It doesn't matter what "wealth of professional software" a tablet can run if it sucks as as a tablet. I think MS realizes this and that is why Windows 10X is coming.