My network setup is a pfsense router paired with an used external AP.
The Router is a all in one barebones Supermicro 1U SuperServer:
Supermicro SYS-5018A-TN7B:
Intel Atom C2758 (8C/8T) 2.40 GHz (TDP 20W)
32GB DDR3 1600MHz ECC RAM
120GB Intel SSD
7x 1GB RJ45 ports
I honestly don't have a very good impression of Ubiquiti, I've just converted all of my network gear (switches and AP) to Ruckus based stuff (ICX 6430-48P & ICX 6450-48P Gigabit Switches, and Zoneflex 7982 AP). Not cheap, but very available in good condition on ebay particularly now with there being constant large upgrade cycle in institutional/industrial switching gear there is a constant stream of quality barely used equipment. I got my Ruckus AP for $35 and it looked brand new.
If you don't mind staying one generation or at most two behind, you can get really high quality stuff that's made to last and just work.
