I have 4 Axiom QS-8s in my main HT room and a pair of DT AW 6500 outdoor speakers. I like both of them a lot for different reasons.
Since a large part of your constraints are around aesthetics, I have to say the QS-4s will get expensive quickly. The default vinyl colors for a QS are black and boston cherry, if you want a nice white, it will cost. Also, the real versatility of the QS speakers kicks in when you buy their matching Full Metal brackets. Those give a lot of positioning flexibility but also cost.
The QS's, in my opinion, have a more diffuse sound. They might work well in your situation but they certainly aren't pinpoint sources like your existing speakers are. The QS's are also probably capable of a lot more output then your existing speakers but it doesn't seem like you are looking for that.
Personally, rather than spend $700+ on the Axioms, I would echo what everyone is saying and reposition the existing speakers. I believe your speakers are roughly 3 lbs each and have a tripod mount so if you went with a speaker mount like the one I'm referencing, you could fine tune the positioning to give you a more direct experience.
Good luck!
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