I don't do ported barrels or tubes. A muzzle brake does work on a .460 Weatherby, but compare pressures. And they catch all kinds of plastic build up, and increase noise.
I have patterned both standard and extended choke tubes. Didn't find any significant difference. The extended tubes are easy to change with your fingers on a Sporting Clays course. This is the only reason I use them. In the field I never change chokes anyway.
You will note lots of manufacturers will extol the virtues of all kinds of whiz bang stuff on their choke tubes. They are after your dollars.