I also had both and the thing I liked about the trans brake was it made my car more consistent smash the button car is at the same rpm also with the brake I think it helps because my experience with it was suspension is in a neutral position while staging vs footbraking.
Now getting used to cutting a good light is definitely a learning curve without using a delay box

71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it.
67 Belvedere that worked it's way in the 10's