Recommendation - Ref 3a, GMA, NHT or Fritz?

Canjo07-I've heard an earlier version of the Decapo and I thought it was to colored in the midrange. I don't know if the current version has the same characteristics. The GMA is designed to use the room to achieve it's lowest bass output. This tells me the GMA is very room and placement sensitive. I've heard(several times) your previous speaker PSB-Gold and know it's a great rock speaker. That is the main reason that I also suggested ATC and Revel.

Vapor Audio Breeze or Stiff Breeze, depending on your budget.

I've owned the R3A MM deCapo-i for several years. I had a pair of Carbon 7's on loan from Fritz for several months. Comparing the two side by side, I'd say that the Fritz are more dynamic and tonally accurate, especially on vocals. Bass on the Fritz is way superior in extension and impact. Detail is close on both with the Fritz having better soundstage and imaging than the R3A. The R3A sounded thin and anemic compared to the Carbon 7. The R3A is more sensitive and efficient than the Carbon 7 which should not be a consideration with the OP's amp. I ran the Carbon 7 with a pair of Cary 300B amps and with a Bryston 4B and they seemed to work equally well but different. I did sell the R3A's shortly after comparing to the Carbon 7's. After the Carbon 7's, I owned a pair of Marten Form Floors for over a year and I have now settled on Frit's latest creation, a pair of LS3/5r towers which I consider to be among the best of the best under $10K speakers on the planet.

Depending on your budget you should also consider Vapor Audio Breeze or Stiff Breeze.

Hi
I can only speak to the Dicappos. I really like mine. They are an awesome match for the 300b amp. I dont think one can go wrong with these speakers. So count me as a fan of reference 3a
Rob