I heard the all the Epic (CF) series when they came out. I wasn't a fan of these (or really any Klipsch consumer 2-way speakers), so I won't comment any more on those.
However, I own a pair each of P-37F, KLF-30, and Chorus II. All those are great speakers. I think which you prefer will depend on what sound qualities are important to you. If you will be running without a sub, then KLF-30 and Chorus II might be a good fit because they have better bass extension. I give the KLF-30s a slight nod over the Chorus II because I think they have less mid-range horn coloration.
However, my favorite is the Palladium P-37F. Literally everything is better, smoother, more refined without sacrificing anything except bass extension. The midrange is more open and dynamic. The imaging is amazingly precise. I was playing to the second track (I'm Confessin') from the 30th Anniversary SACD release of Jazz at the Pawnshop and I could close my eyes and “see” precisely where the quiet background conversations in the Stampen were located before and during the performance. One word… Goosebumps. The best way I can describe them is like they are the children of Klipsch and B&W parents. They have refinement/intimacy like B&Ws but with Klipsch-like dynamics.
Surprisingly, the mid-bass “punch” of these speakers is better than the KLFs despite the fact that the KLFs have more bass driver area than the Palladiums. The clincher for me are the tweeters in the Palladiums. Those tweeters are the smoothest, most extended, and just plain magical Klipsch tweeters I’ve ever heard.