802.11N should be good enough; you probably want one that supports both 2.5Ghz and 5Ghz bands. 802.11AC is the next thing but 802.11N is more than good enough.
If you're really unhappy with the consumer grade crap out there then go to
Meraki and spend a little more. It's not something you can buy in stores so it might not be easy to buy but it is way easy to configure at home and will give you a lot of control over your home network via their cloud management software.
They are owned by Cisco now but they are not consolidated into the company. It's not consumer grade stuff, not 'Linksys'.
just full disclosure - I am a Sales Engineer but I do not sell Meraki stuff.