[gtc]

As much as I love Kleins, I would go with something newer so you can avoid the potential hassle of trying to find replacement parts for those odd-size seatposts and proprietary headsets (Mission Control bar/stem/headset/fork).

Edit: I just looked on St. Louis craigslist. I don't think either of those bikes are particularly good choices. The pinnacle is too old and beat, and the adept is too expensive.