At the present time we own a 2008 Mercedes W221 S class and were considering upgrading to the Mercedes V class until we saw the Alphard Velfire and will be trading in for the Velfire instead of the V class based upon the level of equipment and being a fraction of the cost to maintain. The only 'downside' that we found with the Alphard was the Japanese software.... Great video's.
So far the 360 on the Inspira is still good. I seldom use the 360 function since install. Normally just use the rear view only. Since I have not much use for the 360 unit, I will probably not be upgrading it to newer models.