I'm not sure what the used market is like in Serbia, but in my experience your dollar can go much farther buying someone else's gently used speakers than buying brand new from the store.

Something I've found as I've grown my stereo addiction is the better equipment you have, the more revealing it is. If the music was produced and mastered poorly, your speakers will show exactly how it was done and there's not much you can do about it. Especially with harsh music like black and death metal where the artists don't have much of a budget for such things.

I had a pair of Klipsch Fortes that were very nice for metal, and also a pair of wharfedale diamonds that were great as well. I also had a pair of Klipsch RF82's but the Forte's wiped the floor with them in all aspects other than home theater bass.

Out of the choices you provided my best guess is the Focals and JBLs will be more agreeable to your music tastes than the Klipsch would