Like most i started out watching from a far untill i could make the leap over to unfi.
As a UK resident i started out with BT routers from HUBS 1-6, but awhile ago i ordered a few UAP's and fell for unifi.
I felt the controller screen was lacking without a USG so again took a leap and then justified it to the wife after.
I upgraded to UAP AC and am currently holding till again I can justify upgrading to hopefully UAP AP Pro's and a 8 port 60 watt switch.
i gotta say a big thanks to UBNT as your kits rocks
my current setup is
openreach modem unlocked on ADSL2+ 24 meg sync ip profile 23700k
RPI3 for the controller (headless)
lindy 6x2 HDMI 4k matrix (2x1080p TV's via HDMI 2.015m leads)
apple tv v3
BT youview no supcription plus netflix
IR room to cabinet via CAT6
RPI3 also running IPC orchid for IP camera NVR
PC 12cm fan conveted to 5v USB for air flow on USG and OR modem
like most still need to upgrade and tidy but it's a work in progress
thanks to you wall for the info on the forums its helped alot