I'm glad someone started this thread because my experience has been hit and miss, and VERY frustrating. I've come to believe the Clarity formulation is more hype and marketing than any science because while my Armstrong/Ellington sets are fine, my Jethro Tull Aqualung is among the noisiest discs I own--even after replacements. I agree with the OP--it's like fireplace is popping like mad in the same room. Ridiculous for this kind of money.
My other sets (Norah Jones and Holly Cole) fall in between these two extremes of noise, so overall, I am down on the formulation and would discourage anyone from spending their money on these sets.