Load them all, hard drives are "cheap" and you can even specify if you don't want certain ones to come on randomly.

If you're really bent on picking one version, it's really up to you. I know if it was my empeg I'd pick the version I liked the best, even if the recording wasn't the best, especialy knowing that you're going to be listening to these in the car where the acoustics and road noise will interfere with the near-perfect recordings.

Matthew