surface pro 9

Hoping some of the knowledgeable folks on here might have some insights on this. So I just upgraded from a Pro 6 which I've had for three years to a Pro 9, reason being the jump in graphics processing. Everything was going great until I touched my stylus to it and immediately noticed a jitter...

I tried a 13" surface pro 9. While I like the touchpad and how smooth it is, I would really like a 16" screen. I absolutely love how I can fold the surface up and use it like a tablet. The keyboard of the surface does feel a little bit more flimsy but a metal keyboard of similar thickness would...