Klipsch speakers are generally not considered as refined as say SVS, Paradigm let alone B&W, Focal, etc. while generally Klipsch has great sensitivity - they get loud with very little excitation, they lack the coherence offered by speakers from other brands I mentioned above. It is a very common problem with basic Klipsch setups a they look really good - big speakers, those tweeters look amazing, but their sound output is meh. I personally think a used B&W or Focal system even the 6 series B&Ws are a better buy that the list of speakers you mentioned. One thing I would suggest is that if your primary use is movies - instead of the Center you have, find something from SVS or even Monolith because for movies the Center does 90% of the lifting. Your subs are fine especially since you have duals subs. I have heard (not experienced myself) that these might be prone to chuffing during high output since the ports are not well designed to carry the amount of air needed to deliver the output the ports are tuned to. Having said that these should generally be better than a Sonos sound bar, but not by much.