I'm not sure. We've always bought McIntosh apples (I assume that's what you mean, and not Macintosh computers) for apple pie, and I can't say that I've noticed a difference. Perhaps the time of year is the issue. I know that apples are a lot more fresh in the fall, and at this point, many of them may have been in cold storage for many months (not as fresh).
Cross-posted to rec.gardens.edible