Given that this knife is my favorite, as all who know me can testify to

, I'll chime in on this thread.
First, congrats on finding a source, they're getting tough to find now. I saw your WTB ad and wanted to point you towards one, but wasn't allowed to post.
For daily carry I would recommend a 440V PE or S30V CE, if only because they would both be easy to replace. Not sure of the exact numbers produced, but both of those models seem to pop up more often than 440V CE and the near mythical S30V PE (only around 90 were produced, from what I've heard)
Most online vendors still have some S30V CE lying around, and Ebay tends to produce 440V PE almost weekly. That's why I'd recommend one of these two models. If you can get ahold of one of the other two, by all means go for it.
A small side note, it may be my own anecdotal evidence, but I've noticed the 440V models lock up more solidly than the S30V versions.
Good luck with your choice, and rest assured knowing that, no matter what you choose, you've made a good choice.
