I don't see why you would want to use anything but full speed brake on any type. If you are in a high energy situation (too high and/or too fast), an application of full brake until on profile then putting them away is more efficient than a partial deployment for a longer time.
The NG speed-brake is slightly more effective than the classic IMHO (I've only flown 700s in the NG series), but still not great. The biggest tip I can give is to use it early, and use it at high speed. If high and fast, keep the speed up and use the brake to increase ROD, THEN slow down, as it creates more effective drag fast than slow.