Of all of these, ASUS' CT100 tablet has gotten me the most excited!
ASUS is also targeting the CT100 towards education but it is perfectly suited for anyone looking for a quality 10" tablet. Instead of an premium metal body of the Google Pixel Slate and HP Chromebook x2, the CT100 has a more rugged texture body with rubber borders to offer better protection. It makes sense since it is targeted towards school and kids, but for those who usually put a case on their tablet for protection (and thus covering up the premium finish) this would actually save you from having to do that.
The weight and balance is good for one hand use and although it feels thicker then the Slate since it doesn't need its own case in the end it might actually be thinner.
The screen is great and is both sharp and bright. It comes with a stylus including a place to hold it. It's capable of running web apps (ChromeOS gives you a full fledged Chrome browser), Linux and Android apps (it seems to run Android apps better then my Pixel Slate).
The performance of the tablet is very good both for web browsing and Android apps.
The price is $330 is very good for a tablet of this quality. Unless you need a 12" screen or 2-in-1, I would say that this is the tablet to get!