If not too late to the party:
White - it stays a hair cooler when you put it up on the glareshield and it overheats and you get the "I'm too hot message"
Also a white cover.
Same reason.
And full size over mini - but I have older eyes and like the bigger screen.
and a full size is the same size as the two segments of my trifold kneeboard so I don't think it is such a big deal as some seem to think it is.
YMMV