I am using Klipsch rear speakers at the moment. Also a center speaker that I occasionally use -- these will go back to being home theater speakers if I ever relocate the organ console and move the TV from the fireplace (not in the fireplace) to where the organ is now.
So I get along fine with the Klipsch but have no experience with the tower models. I used to have a vintage pair of Klipsch (12" w/12"passive) that were a bit forward sounding but wonderful. I've seen less than glowing reports on this forum though so I guess I'd go with studio monitors UNLESS I were looking for something to do double duty for home theater.
When I was running a single pair of speakers I used the vintage Klipsch pair and sometimes a pair of 15" PA speakers with horns that frankly sounded as good but didn't fit any reasonable space if I wanted six or eight of them. I would occasionally switch between the PA speakers and a small set of Polk's (with sub) to see if friends could tell which was playing.
With the current Behringer 3031As I don't need external amps and can tweak a range of sounds with all the controls. I currently run them at -2db on the treble response and flat otherwise. Just my thoughts.