To be honest, I have only heard bad things about those units, particularly the support.
For our C30, we went with one of these mounts:
https://www.brodit.co.uk/brodit/vehi...o/C30/2012.htm
And a pure highway which added DAB, bluetooth audio, and hands free calling via the aux in:
https://www.pure.com/en-GB/audio-hif...black/p/147997