However, no router in that price point gives you the ability to easily expand past one AP, RADIUS VLAN support, the Unifi web interface and so forth.
My last setup was an ASUS N66 dedicated as the router with an Archer C7 as the WAP. Good performance but the configurability and stability (even with ddwrt on the asus) doesn’t compare to the ubiquiti combo I run now.
You must be assuming that the user insists on sticking with broken vendor software, instead of switching to OpenWRT. The only software benefit that you don't get just as easily from OpenWRT is centralized management of multiple APs. Adding and configuring APs one at a time is very easy and since home networks never require more than 2-3 APs the lack of centralized management is not a significant issue. RADIUS and VLANs are fully supported by OpenWRT, and the web interface is fine except for the aforementioned limitation that you're only managing one AP at a time.
I suspect your stability issues with the ASUS router were a consequence of you using DD-WRT hobbled by proprietary WiFi drivers, instead of an OpenWRT-supported router. The DD-WRT "project" is a mess compared to OpenWRT, which actually puts out stable releases and operates more like a proper Linux distribution. Third-party firmware distributions aren't all the same.
I used Merlin ddwrt which was supposed to be dedicated to ASUS hardware. At some point fiddling with wrt takes more time than the nonexistent price difference with the ubiquiti equipment :)
I didn’t use the ASUS for WiFi, just routing. My instability had to do with ipv6 issues - it would stop broadcasting RAs if I remember correctly causing intermittent connectivity issues. I would have to cycle power every so often (month or so?)
No such issues with the edgerouter. I’m sure OpenWRT works great for folks, I just found it wasn’t the right fit for me.
I've been looking for an excuse to go down the Ubiquiti route, but I really can't find one.
I'm personally using a TP-Link Archer C2600 that was on sale for $70 from Newegg in January.
In the end mucking with open source firmware, while interesting, just wasn’t worth it. I found the ubiquiti solution stable and the UniFi management software (especially their iOS app) are excellent for my needs. Plus mounting my AP in the ceiling means I can cover the entire house from one AP and at the same time keep the rest of my networking equipment stored away in the basement.
It really isn't. There are plenty of consumer router+AP combos in the $75-90 range that offer equal or better performance to the ER-X + UAP-AC-Lite combination.