I have some of the tri zone (normal hard plastic and airlite ones) ones and they are fab, the velcro is so secure and when they get dirty I can just bung them in the washing machine!
I used to have a pair of tekna ones which looked very smart but I had to stop using them as they had really 'sharp' edges at the bottom so where causing my horse to get bad rubs.
I also have posh pairs of leather beval and action horse ones and they are so nice!
I also have fouganza ones which I am yet to use so I can't really tell you about them!
Have fun at badminton tomorrow, I'm s sad that I can't go :'(