I'm getting ready to buy my fist set of cannisters and would like to know the differences between the mfgs. My observations to date, though limited to my own field, seem to show some brand loyalty tied the the engine (ie: all the 3w guys run Pefa, DA guys use MTW, ZDZ guys run JMB). I'm sure most just bought whatever cannister system the engine distributor also stocked. I haven't seen any KS cannisters yet. I understand that header length and prop selection are large variables in the overall performance of the power system, but what are the differences in the cans themselves with respect to noise reduction and power gain or loss? Does one mfg tend to have a flat power curve while another maybe peaky?

I've seen a few sets for sale advertised with very low time. I'm thinking if there already installed, why change them out and sell unless they missed by bunch the owners expectations....