Welcome!
Sorry your post has gone so long without a response. Here are my initial thoughts...
I haven't personally hear of Dali speakers but they seem a bit on the pricey side for what they are. That may be due to shipping costs since they're manufactured in Denmark? They may be fine...
Your room is quite a bit larger than mine, which is about 12 x 11 but I still find it odd you're having to crank up the SB4000 as mine stay at -20dB on the subs and between -8 and -4 on my processor, depending on the content. I don't know that you'll really be able to make meaningful judgements...
Well, not to derail the thread but Klipsch has to be doing something right. They sell a LOT of speakers. I personally think it's a matter of what you value most. Put another way, "there's an ideal customer for every product." I'll admit, I thought the Klipsch's sounded pretty decent, until...
Klipsch has a large line of speakers covering a huge price range so I will only comment on the RP 280F's and RC450C I currently own. The "everyone likes Klipsch" sentiment is likely accurate and for good reason. For what you pay, they do offer serious performance at the low end. I bought mine...
Respectfully, I don't understand why you couldn't have simply stated your opinion without alluding to some kind of "war." It's just a discussion. The whole idea of threads like this is to gather diverse perspectives. Yours is one of them but what's the harm in someone expressing a different view.