I've always been a Sennheiser user, but when I needed some noise cancelling phones I went for the QC35's due to the reviews.
Not a big fan of how they fit my head, however. The earpads just aren't that comfortable, and certainly not a patch on my sennheisers. Does anyone do aftermarket earpads? Preferably in velour or something, the QC35 ones are a little too sticky!