I'm a huge fan of using UniFi products in the home. I run a UniFi Switch 8 and UniFi UAP-AC-Pro, covering around 2300sqft. The setup cost around $250.

Like someone above, I use an ER-X (with hw offload enabled) and a UAP-AC-PRO. Cost is about $200 total.

Rock solid reliability. I have never had to reboot my ER-X or UAP-AC-PROs except for firmware updates. You'll also get updates for a long time compared to consumer gear.

Unifi kit is, relatively, cheap for managed networking equipment, exact prices will depend on what country you're in.

I've got 3 Unifi APs , a 24-port switch and a security gateway.

Personally I like managed kit 'cause it provides some insight into whats happening on your network. If you see a slowdown what's causing it, what devices do I have connected etc.

Additionally, Ubiquiti has a nice manager interface which makes updating the firmware pretty easy, which is nice security patches are needed and making those easy to apply is a good thing.

My setup was pretty cheap: an EdgeRouter X for £50 and an AP AC Lite for about £70 (I think). The X is surprisingly good for such a small/low price router. Took me a couple of months to get it configured how I wanted (split ISP/VPN networks across both cabling and wifi) but it has been very solid ever since.

When I move to a bigger place I'll probably put the router behind a big PoE switch and buy some of the 48v PoE compatible APs. We use them in work and they've been very good so far.