I have a coupe - so don't get the sun you might in a roadster.

That said - I did have the same unit in my ferrari cabriolet and it was fine.

You can change the contrast and on the whole it is no better or worse than any other on the market.

The great thing is the price. You can get the Alpine and an ipod video for less than the price of the JVC. In the UK you can get both for under£400. While the JVC is £450.