I've done a lot of flying in the Easy Raider and Escapade, which are basically derived from the same family but a bit more sorted.
They aren't quirky to my mind - they're well sorted flying machines; what they also aren't however is standard spamcans. You need to be familiar with how to handle low inertia / low wing loading aeroplanes, good with tailwheels and also comfortable with managing a Rotax engine or similar. Crack those - say with some instruction in a Thruster TST, T300 or T600T/582, and you should have no problem with them.
Of the general stable, in my opinion the Easy Raider is by far the nicest pilot's aeroplane - but it's horrible for the passenger. The Escapade is thoroughly enjoyable and well sorted, just doesn't handle or perform quite as well as the ER. The Kitfox and Avid will basically be slightly less well sorted versions of the same - but so long as pilots get to know the class, they have a good safety record and give a lot of pleasure.
G