Best Klipsch floor standing speaker

Epic CF-4 version 1. I have also owned Conwalls (late '80's) Klipschorns (late '70's).  

Those CF-4s are pretty close to unobtainium. Especially V1. I had some cf-3 that were version 2. I think those are the only thing that I've sold that I kind of regret letting go. They were kind of hard to sell too which seemed odd but a lot of people don't like big speakers.

big_greg,
Yes, they are. I came across mine in a funny way. I was reading random reviews on audioreview.com years ago and happened on a review of them by a man who owned them and was so emphatic about how good they were that I went looking for a pair. I found them on ebay, and even though I had just bought my second pair of TDL Monitor speakers after regretfully selling the first pair years earlier, I bought them on a hunch for $900.00. I was shocked the first time I listened to them, and immediately sold the TDL's...again. 
They have surpassed the performance in most categories of the other 17 pairs of speakers that I have owned, including a pair that was highly rated by Stereophile and would be an apples to apples comparison, the JBL Array 1400. I bought them as well after owning the Epics for about 5 years. They were beautiful, and very good, but not as good as the Epics.
They were a truly amazing creation by Roy Delgado of Klipsch. 

That's a good story. I had some KLF-30s for quite a while after looking for some for a long time. I liked those a lot as well. Better in some ways than the CF-3, but the cabinets were not very well made.  I let those go not too long ago. I'd like to get some Quartets if the opportunity presents itself. 

It is funny I own a pair of Klipsch Epic CF4 version 4 I am the original owner was thinking that maybe the newer line of Klipsch had something better they still sound great using a Marantz SR7011 and a B&K Reference 7270 Series ll 7 channel power amp which I bought with the Klipsch maybe no need to change I do not change gear often mostly due to technology I needed HDMI inputs for my LG Oled tv and 4k Oppo player which was the reason for receiver change from my Yamaha RX-Z1 which is still going strong in spare room I could use Yamama 7to1 inputs with the oppo but with other items on the rack just needed HDMI.