I don't have the towers, but I do have the Sierra 2's. I find them very non-fatiguing. The RAAL tweeter is excellent.
ascend sierra tower with raal or Focal Aria 936
I am trying to decide if I should buy either speakers. If someone has demoed both or purchased them can advise which one is better or should I be looking at some other speakers in $4000 range? I want a speaker which does not become fatiguing after a while. I have Parasound A21, Aesthetix Rhea, Audible Illusions L2B and cables are Nordost Tyr and nordost heimdall as speaker cables. I listen to Vinyl almost all the time. Thanks Guys.