You have to know what makes sound good. If you don't understand what component in your system makes the sound they way it is, you basically are just trading one type of sound for another. Brightness comes more from your components than the speaker. IMO the speaker just passes along what it is feed. Sure some designs are more open, some are faster sounding, some have deeper bass. You need to decide what you like and bring along the music to demo the speakers. I use piano as a go to. If the piano sounds bad the rest to me never falls into place. Then I go from there.
Listen with your ears and if you like them better, then buy them.