EDIT 13/08/2019: After a year's worth of use and to save trawling through lots of posts - I'm giving this head unit a firm 9/10. It is almost perfect for my needs and is better than the Columbus unit I replaced in almost every possible way.
I've had a Columbus in 2 cars now, it is generally 'ok' at doing most things and gives a nice array of features - I also have MDI, Bluetooth and Maxidot in my current Octavia so fairly happy with the overall package though both my Columbus and Blu