Also, to tack on to the use case question, a lot will depend on your budget. Personally, and this is personal opinion, anything with eMMC/Flash and a Celeron processor will leave you tearing your hair out 6 months down the line. It might seem snappy and quick when you get it but that won't last long. Bloatware is also an issue I have experienced with CBs in the past. By the time you get to a decent spec you are in to reasonable laptop price territory.
Tech in tablets is basically getting many of them to specs rivalling Chromebooks which, in my opinion, are nothing more than app driven web browsers.
But then, I am of the opinion that desktop PCs are still the answer unless mobility is an absolute must as with any miniaturised technology smaller generally means lower performance through TDP throttling requirements. My best advice would be think carefully about if you actually need a Chromebook before buying one as their resale value is terrible once you realise it's bugging the life out of you being so slow for no other reason than thermal or capacity.
My son had a Chromebook for his A levels, the school recommended them and they offered a tie in with a supplier. All of his work was done in the cloud using Google docs, email is gmail etc. He still uses it at university, the same set up all in the cloud. He also uses it to watch Netflix and Amazon. He doesn't download any software onto it other than those two tv apps. I asked him at the end of last term whether he needed a new computer and he said no, it was doing fine still. I am pretty sure it is a HP Chromebook, cost would be around the £200 mark, may be slightly more but not by much.
I think the key is to be disciplined and keep everything cloud based, don't download additional software. As long as you do that the Chromebooks seem to do okay. If you slip at all and start adding software then they will soon grind to a halt as others have mentioned.