Looking at these exhausts and just wondering what the big difference is between the double barrel x and just the double barrel? Also the difference between baffles and no baffles. I'm guessing sound? or Performance? I seen their contact number but thought I would try here first... If anyone can set me straight I would appreciate it... Thanks...

Why would you want to hear it second hand? I personally would rather here what the designer / builder / inventor thinks of the different types. Call the man up & ask him the difference. I had the double w/ single outlet (original MM) and loved it when I moded my motor I went with Double X and no restrictions for maximum performance.

Dan's a great guy to do business with!

True. and after posting this I decided to just go ahead and call and I did speak to Dan. Going by his place in the AM...