Wi-Fi booster recommendations?

I'm on the hunt for a Wi-Fi booster. I've come across these options:
http://us.dlink.com/products/access-...ange-extender/
http://www.tp-link.com/en/products/d...L-WA854RE.html
http://www.tp-link.com/en/products/d...L-WA750RE.html
http://www.tp-link.com/en/products/d...L-WA850RE.html

What would you all recommend? To be honest, this stuff is way over my head. What specific features should I actually be looking for when picking out a Wi-Fi booster?

Just speaking from a layman's perspective here: I wouldn't go with this Netgear Extender because its transfer speeds just can't compete with the other three options on the table.
If it were up to me, I’d personally pick Netgear Extender simply because it comes with a mobile app. I’m a total sucker for anything I can control from my phone, even if it's a bit of a gimmick 😁
That being said, the D-Link model does actually have a higher rating overall.