[dnanian]

I think I'd generally recommend not being overly selective in your copies, for sure, that way you can't mess up the excludes. But, my general philosophy is that trying to put verification in the same code that does the copy means that while you can catch things like copy errors (that would be caught anyway, since we stop on errors), you can't catch "algorithmic error" - that is, if we have somehow made a mistake, we're going to make the same mistake in our "check" (since the "check" is, in essence, the same as the check-to-copy).

So, using another product, written by a whole different team/company, helps to ensure you're really "checking".

You'll note I also encourage people to use multiple products to back up, and multiple devices. Again: my primary focus is to try to get people to back up. It's a big reason SuperDuper's free version doesn't expire, and why I provide the same support to our free users (and there are a lot of them) that I do to our paid users.

Hope that makes some sense.