I've only used one and it was a couple years ago but the UI was really laggy and slow, if you're expecting something like iOS. The touch interface experience in Win10 was probably fine if you're someone who didn't mind using 2005-era PC laptop trackpads (I gather such people exist?).
Well yeah, it was an earlier Surface, of course. This was about three generations in to my reading about how good they were, though. I was pretty surprised at the reality of it when I finally got my hands on one.