Your Axiom candidates will sound great. With regard to the "brightness," barring the actual 30-day trial (you can only order the M22's first, so that the return shipping would not be too much even if you do not like them), the only way to "examine" your own tonal preference is to listen to a number of speaker brands in your local shops. For example, if you do not feel that, say, the Energies and Monitor Audios particularly bright, it will be unlikely that you feel the Axioms too bright, either.