Right then people I clay barred the a7 yesterday with amazing results and the **** that came off even after I'd cleaned it was astonishing. Going to do the wifes a4 but I used all my auto finesse bar. My question is I've seen loads of different bars for sale and I'm going to try one of the bilt hamber bars as I love their stuff. Has anyone used the cheaper blue clay bars. Are they cheap for a reason or do exactly the same job?