I'm not sure I follow this. Let's say reviewers agree the Sigma is "easily as good as the Canon", and it's "only" 25% cheaper, you still wouldn't buy it? For me, if it was 1% cheaper, I'd probably spring for it. Obviously I have a lot of confidence in Sigma

I think a lot of people have mental blocks about using third party lenses. Unless it has the name "zeiss" or "leica" on it, they assume it's rubbish.

