I think I'd steer you more toward the frogs - I haven't used them, but I understand from others that they are passive release - they don't take much force to get out, but are still secure when clipped in. I'd really hesitate to encourage anyone to set their release tension very loose on adjustable pedals... *if* you clip out when you do not intend to, the results can be pretty disastrous.....

(my husband had a pair of faulty pedals - he accidentally unclipped both feet when he stood to sprint through an intersection.... it was not pretty to see him go flying... fortunately he was OK)