Good question. It has been a long time since I heard a Klipsch midrange. The drivers were not the greatest and with the screw on attachment, it is hard to pop on an 802 for comparison.
And note that Klipsch had a nice Western Electric collection. The first articles on the Klipsch midrange horn show him using WE 713C drivers and there is a bunch of WE gear still sitting in the Klipsch Museum in Hope, AK, I think he was trying to make something decent and affordable for the consumers while he was listening to the good stuff himself, or at least he had it as a reference.
More interesting is the question of good modern stuff that you can buy, easy and cheap.
The Volti Audio room at CAF had a good three way with modern pro drivers and a plastic horn. Sounded pretty good. Maybe the best thing there, after the DIY room of course.
There must be a good modern 1" horn that will bolt up to an Altec driver, but I have so much decent antique junk laying around that I have not been pressed to investigate.