Asking which ARC gear is better, the cheaper or the more expensive, you're going to get these kind of responses. In defense of the Ref 3, I emphatically state that it is a bargain at the used price. In fact, with the money I saved I upgraded to (used) Nordost Frey 2 and Tyr 2 IC's. That's an upgrade I would do before jumping on a Ref 5SE any day. I would love a 5SE or Quatros - I have 3A Sigs. Until and if I can afford them I'm in no way unhappy - the Ref 3 is that good.
Audio Research Ref. 3, Ref. 5, or the Ref. 5se.
I am looking to add a Audio Research preamp. Looking at the Ref. 3,5,5se. The 5se is a bit high in price.
I have a Wadia S7i CDP up front with Pass Labs XA100.8 amps. I am using Vandersteen Quarto Wood CT speakers. Witch Audio Research would make the best sense to go with.
Thanks for the help Russ.