Put one in at the beginning of the year, no failure yet but not a long test period. Simple to fit, my 2017 T6 required a connection lead for the aerial, available when buying the head unit or elsewhere. Had a rear camera fitted later by Day-Tec (even simpler
). Reasonably cheap way to get Apple Carplay and use data/iphone satnav, internet radio, music streaming. No DAB radio and radio itself pretty rubbish in my view - it may be me but I don't see how to get it to automatically retune to 'follow' a station as you drive around. Works with MFSW but doesn't display anything on the MFD, only on the head unit itself.
So, OK as long as you always connect your phone. It is relatively cheap, but missing features you may have taken for granted and that could annoy you.