Well, Ed, wish I'd seen the thread sooner...either way don't sweat it. I would have said for the budget, get the E-II, but $30 isn't all that much either for the latest, in fact last, incarnation. The E-II and PE are pretty much interchangeable. I have both and have found no practical difference. They are by my experience functionally identical. Both really good optically. It's said the PE's coating is slightly better. It is slightly different when you look at the coating reflections, but I haven't seen any difference in pictures. They both take the bayonet hood. The E-II does have f/16 on its DoF scale, and even more important, a nifty green stripe! The PE has the somewhat easier to grasp wider, uninterrupted aperture ring. You're good either way.
The best place to spend a little extra is on backs. The backs are, IMO, the most likely spot to have age/use related problems, like improper frame spacing and such. The AEIII prism is good if you need to meter TTL, but it seems a little fragile. And it's not fully coupled on manual-you have to transfer the readout to the shutter speed dial. As a meter it's great, and I like its separate ISO and exp. comp. dials, so there's always full range on both. The built-in diopter is nice and so is the eyepiece blind. I just wish it was fully coupled and beefier!