I got that info from the people/companies selling the other brand systems. KTMTwins did tell me that the Akrapovics are probably their favorite and the "standard", probably highest end system they sell - either the Evo's or the Oval systems - but if I need something with a spark arrestor I couldn't go wrong with the FMF Q4 system. And they sell the Remus and other higher end ones also. I might have ordered it from them except that FMF has them on sale thru the end of February at 20% off so the price is better thru the factory.
Thanks for the comments and help.