The "Pro-tree" transbrake releases faster by usually having 2 dumps for the fluid from the reverse piston. This is so that you can go red on a Pro (0.400) tree. The brake will need to have the button/solenoid activated for reverse to work.
The "full-tree" and "bracket" brakes are the same, I believe. These are your more standard slower reacting transbrakes. The ones that I have owned do not need for the button to be pushed for reverse to work. If you are running off of a full-tree (0.500) with a delay box, the extra delay of the brake releasing is figured into the number on the box. They are usually over 0.500 seconds release & reaction time, but they can sometimes be faster. If you are leaving off of the bottom bulb, then you will want the brake to release & reaction to be closer to the 0.500 delay between the bulbs.
Bill Mitchell