I've seen and heard all these clips. Great resource btw, so is youtube. Thanks to those who have spent the time going through the archives and building a thread like this.
My vote goes to Mark's. I don't really like 4 into 1. It throws the lines of the bike off, although, my second vote would be the Kerker 421.
Anyway, I digress.
Is markspipe.com where I get the real deal? Not some knock off? Looking for recommended vendors, good service, fast shipping, not the take my money and run sort.
cheers,
Jeff