HanoiJane
Bearing in mind your very low weight (different cultures as you say, I know), can I ask if you are male or female. I'm not trying to be rude, but my children weigh more than that, and are very slim.
I suppose if you were 20 or 30cm taller, and weighed 30kg more, as some of the other pilots here will, then you may have found the '21 a bit more cramped.
It was designed with Europeans in mind, so I do understand some of the posters views here.