Welcome KobeeDog.
I would describe the Axiom sound as being similar to both Paradigm and PSB which makes sense since they all did most of their research through the NRC many years ago. All of these companies have strove to provide a flat frequency response, true to the recording. The "brightness" you may have read on some forums probably alludes to the earlier versions, but in most cases is probably second hand hearsay. The best description for Axiom(or Pdime, PSB), imo, would be that they are revealing...much depends on what speakers you are already used to, sometimes an adjustment period is necessary when auditioning different speakers.
If you can, you might find someone near you that could let you audition some Axioms. Good luck!!
