Have just looked at some reviews for the following model
TP-LINK 1900Mbps AC Wi-Fi Wireless Range Extender RE580D
And its looks very promising, judging purely on the review most users are giving this 5 stars, so personally I would feel confident choosing this model.
if you had a different model in mind, post a link and I can take a look, although I can only work with actual experience of having used with the Netgear model I have myself, aside from that you could always look at reviews from people who have used any given model yourself since that all that I would be going on for making any recommendations, but like I say the TP-Link RE580D does have exceptionally good reviews.
I posted a topic on my entire network upgrade not long back so you can see all the equipment I use, I will leave a link for you to review if you like, but I have had no issues since setting up the wireless network I am currently using, have ever even needed to reboot my Router or Extender, it remains to this day 100% smooth running.
Link to topic illustrating my wireless network upgrade.
https://www.computerforum.com/threa...work-upgrade-solved-connection-issues.242316/
In all honesty when I started out the upgrade the extender was the last thing I tried, all I really wanted was a stable connection in my home office, the network card in my PC was dated anyway and did not even support AC so changing that was on the cards away, as for the router, does prove useful because now I have 2 routers and my kids can still connected to the old one as supplied with Virgin media, so the second router along with the extender gives me my own personal wireless network that only my own devices are connected to which has its own bandwidth benefits when you have 2 kids both who like playing on there PS4's often enough with there phones, laptops, pads also using the wifi.
The fact is that maybe if I had gone with the extender first I may have resolved the weak connection issue and not bothered to add a second router but I am glad I did becasue the end result is a very smooth fast, family traffic free personal home network connection, so I am very happy with the end result.