I haven’t played Carom and I don’t really know the difference of Carom or 3C at this point, but I do want to explore the game. I am planning to buy a cue that has 2 options for a shaft. A Longoni C67 with a conical taper or an E71 with an Eiffel taper. The C67 is supposed to be for Carom and the E71 for 3C. Which should I get? Will both shafts work on either game? Thanks.