In my experience, there's not really any difference between the different Hz. LCDs aren't like CRTs where Hz actually matter - we're not really talking refresh rates with LCD. Getting a screen with a low response time (less than 6ms) should do the trick.

Get a screen with a good resolution (you want to do 1080p high definition, so one with at least 1080 vertical lines, eg 1920x1080). Also look for contrast ratio, at least 1,000:1 but the higher the better.

Good luck!

__________________
You know, Blackadder, for me socks are like sex. Tons of it about and I never seem to get any.

My Photos:
https://imgur.com/a/80hiRdm