William,
I had a feeling it was the WAF swaying your decision away from floorstanders. My opinion? The R3’s image like nobody’s business. I don’t think you can go wrong with them.
I would contact Kef, they are headquartered in Marlboro, NJ, and give them your amp's specs to see if they are a good match. I’ve heard really good things about PrimaLuna.
I also highly agree with your statement regarding Tekton. I had the Electrons for about a week and sent them back. Big, boomy, resonant boxes they are. I have no idea why they get so much hype and attention. Nothing refined there, for me at least.
Joe