The question at point is something I wanted to ask to
But fine all things considered the biggest and most appealing thing about the unit is the fact that its so oem, but if you have an 05 plated car to have a rns510 in a car is gonna be around £650/700 as i got pm'd from another forum member
so the question i ask now, is if we dont run a rns510 what other options are the as an UPGRADE.