Thinking about getting the Parrot MKI9200 for my Mk5, have seen a few reviews and they are all quite positive, anyone had or know of any problems with them or do they do 'what they say on the tin'? Also anyone know if they're easy to fit, have seen a few cheaper on the internet, so tempted to buy from there and fit myself instead of buying in halfords, who offer free fitting, but still works out £50 more!