Challenger very kindly lent the FA regulars (and irregulars
) a Mondrian and a Miró for a little demo. tour. The Miró review thread is here
but some comments also found their way here
The K2, a name also used by both Aerie and Kitecraft in the past, has been very ably demonstrated by Davide Equizzi in a number of videos, not least of which being the one which netted him a win in Virtual Freestyle round 15.