Okay so it turns out this head unit is freakin' sweet
Build quality is superb for £200, literally the only negative i have is that the manual seems to be for a different/older software model as the software guide and images are all different, but the wiring seems identical and was easy to do.
Wifi out of the box, tethering, hospots and VPN. GPS, including time set via GPS, all the usual Android gumf, preinstalled apps for iPod, Music, Video/DVD, , satnav, Radio (which ties to front panel volume and tuning dials). Touchscreen is incredibly accurate, responsive and the UI updates instantaneously, I was expecting lag or slowness.
I've not found a single bug yet though I've not played much. The worst issue I'm having seems to be because of my wiring/the car - it's losing the settings when I turn off the engine and the radio signal is sh*t, I can barely get any stations even though I swear I plugged the wiring adapter I got in correctly - the old HU had the same problem though so maybe the aerial is shafted?