Hi arafiq
If I were spending over $500.00 (sometimes less) on speakers I would be looking into if the speaker is going to be used in a living room or dedicated listening room (that's first on my list). The more complicated a speaker is designed the more it can be fussy about the room it is going to be interfaced with. Keep in mind that a speaker is what stimulates the room, the room's sound is what you actually hear.
One of the major reasons why we see expensive speakers selling for less and less is because listeners are getting wise to the speaker setup, again. And, many more costly speakers simply don't cut the mustard when it comes to room/speaker interfacing.
Last year I bought over 15 pair of speakers ranging up to $18,000.00, and did quick auditions of pairs over $100,000.00. In my 6 listening rooms, even after tuning them to the speakers, people chose the simple designs over the "modern" speaker designs. The common reason was "the HEA speakers sound squeezed and fake". The simple speakers played the acoustical instruments "more true to life".
In this hobby you can always spend more, but hearing more is not included in the price tag.
Michael Green
www.michaelgreenaudio.net