One caveat, if I may, about Klipsch and to a lesser extent Kef Uni-Q drivers: horn effect. It's a slight coloration. It's very, very mild in Kef speakers (woofer cone acts like a conical horn), but it is quite apparent with Klipsch and other horn speakers (Hsu, DIYSG, JBL, etc.)
This effect is completely unavoidable and some people are more sensitive to it than others. As such, the RP's never quite disappear as well as less directional speakers do when I had them. For some this is a boon, for others it's a bane, and it depends on the particular room/ear.
So my advice: if you've never heard a true horn before, check them out! If you like horns already, just buy them. If you hate horns, try a Kef or more traditional waveguided speaker like Elac or Wharfedale. For the ultimate in wide dispersion, find something with almost no waveguide at all.
Again, it's subjective, but hopefully good advice for some of those on the fence...
Tonally, the new RP's are as neutral as I've heard at this price range and you have to get to ~$1000 before you get better overall sound quality from the likes of an LS50, Revel, Dynaudio, et al.
The only other speaker I'd consider for slightly less would be something like the WD 225, or similar, but personally, I'd just save up for a Klipsch as it sounds more refined.
Speakers: M040 | X18 | UB5
Sub: VTF-2 mk5
Amps: HK 3490 | TSR-7810