So I have been looking at aftermarket exhausts for my 2017 Z125. I have watched multiple reviews and read as much as I can find on the topic. I like the two brothers and the yoshimura the best so far. They seem to be of similar quality with the yoshimura just a little bit more expensive. I also came across a video for an AR exhaust which seemed fine also. In my searches for other products and upgrades I have come across several aftermarket exhausts on EBay that are a lot less expensive. I know the old adage you get what you pay for, but sometimes what you pay for and what you get is just a name. I'm not interested in a name if it doesn't do any better. Are these worth trying? I see they ship from Thailand. Is that just because the Z's are popular over there? Does anyone have experience with these versus the Two brothers or yoshimura? Thanks for any help or advice.