id suggest the Linksys Ea6900. i have it and love it and can be bought for about $100. i have tv, game consoles and computer plugged in and multiple phones on wifi seems to work great. had it going on 2.5 years now. also has a very nice app. Another option would be
TP-Link Archer C7 which i have and love. not much of a tech person myself and these were very easy to set up