Thinking of getting a new steel cage without a loose padlock quite like the jail bird design ones,doesn't have to be an original jail bird,just need a little advice on the caging size,when limp how much longer should the cage be,also is it better to get one with a ureathal insert or best to get one you can remove.Are the base arc ring ones good or are they an irritation on the ball sack,would appreciate replys with pics if possible.