I prefer the single-strut PB Freddys. I've used them on several bikes,and properly installed(remember the blue Loctite) I've never had rattle issues. I had a rear get folded up under itself during bike polo;popped it back into place,straightened the stays,and it's still on the bike years later.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line