I always take a few shots & similar
    compositions of the same thing to
    make sure that at least one shot is
    super in focus.

I get it, I do the same thing when I shoot digital. I'm just recommending that those photos never make it past the Previous Import section in Lightroom. If you're aiming for tack-sharp focus, it should be quite straightforward to do a very quick culling then. Also, please say hi to Chris Burrows for me; I haven't seen him since we worked on Visual Studio together about a million years ago :)