I have had the opportunity to hire and observe real sound engineers to work the acoustics in my rooms and I have learned a few things from them. It does not matter how good your ears are, mine a pretty good around19Hz and 21kHz in my last hearing test, if you just place your speakers by ear you are missing a lot. Your ear will take you 60-70% there depending how difficult your room is, but to do it right you need to use some application like REW and decent calibrated microphones to get past that 70%.
Maybe some of you know how I am working and doing the work in the living room of my house in the USA, and I am nothing short of amazed of how easy is to use REW and a microphone and the results are not only audible but measurable.
I would suggest the OP that he does 2-4 measurements after ear placement and @tk21 method, and gets each pair a fair and level opportunity, after all this is the time to decide which pair he will buy and live with.
I know that what I am going to say is subjective, but using my ears and REW, the transformation of the sound was/is nothing short incredible.
As an illustration, here is one of the measurements/parameters in my living-room "before/after" but still a lot of work to do. This system is all analog so there is so much I can do. Some here might argue that I can add more bass volume but at this point this is how I liked the sound best. The smoother the better.
Have a lot of fun selecting your speakers!
