The one without physical keys isn't very responsive and what I type often doesnt register. It's awful. On the zaggs & Logitech my typing was barely diminished with almost no adaption curve.
The surface type cover wasn't bad but seemed flimsy in comparison to others I've tried and the keys are way too close together.
I'm not really looking for a case, what would you recommend just to carry? Like I said early I was thinking of the roll up keyboard