Was thinking about this today. The mirrors on the vt seem to me to be more integral to the design of the car. The later model ones seem to be some sort of ecnomisation in manufacturing.
The way they refined the model after the vx seems to be not really suit what the original design seemed to be about. I realise that they design these things years in advance, but it seems they changed their mind half way along the life cycle of the model.
Of course it is your car and its completely up to you how you want it to look.