Oooh, that's a tough poll for me. I say if you have the money and want Carbon, then get it, no matter the length. However for me, if its a short barrel, I would go with a steel. Short steel barrels are pretty stiff even in light contours. Looks aside, I think carbon barrels have a vary narrow window where the cost benefit ration exceeds that of steel. If you were to ask about a long pencil barrel with a suppressor or a long carbon with suppressor, I'd suggest the carbon, especially in big bores.