Can't comment on anything but T/C, as that's all the production flinters I ever owned. They have been very dependable, and shoot well if you ignore T/C's priming recommendations and prime them properly. I had a Renegade in the late 70's or early 80's, and it was dependable. I had a Firestorm in more recent years, and with some experimenting as to what it liked in loading teqnique it was oftenas fast as a caplock on ignition.
I had a custom smoothbore made a few years back and the barrel was drilled & threaded the same as T/C for the vent liner. The liners furnished were slow to ignite the main charge. I replaced the liner with a T/C liner and ignition was really improved!