Mini , the WTTC series (picked the Chevy all ages), Cat (the smallest and the bigest, the in the middle just did not decide what it wants ) and the Forumula Master seem to be fun (though I chased it just aroudn some tracks for some tests).
I voted Masters, it looks really popular, cant we have some more Formula Masters events RD ? there has been one event a fortnight for a few weeks which is really popular, I am sure there would be a good turnout.