well...well...well... I'm a bit fatigued, but I did a quick A/B testing pitting the Athena AS-F2 against the Pioneer 52FS in stereo mode. No sub, I prefer the Athena. The midrange sounds richer.
Add the sub, it's closer, but I still prefer the Athena. I do have to allow for the difference between the sensitivity of the two speakers .
My neighbor joked that I was just used to the bad sound of the Athena..
I know some complain about that the Athena vibrates with certain bass frequencies, but perhaps with my usually modest volume settings I don't notice it.
I'll do some more listening tomorrow..If I stay with the Athena, fit will be a problem in the new room