Thanks for the feedback, very useful.
The Persona 3F will be more detailed than my Thiel CS3.7, which also needs space to breath. I have demoed the 3F, 5F, and the 9H. The 9H was the worst since the dealer had the bass cranked up to 11 on the speaker and the sound was so disjointed. A shame that I never heard the 9H setup properly. The 3F and 5F sounded great in 2 large rooms. However, the gear that was used was not ideally suited for them.
The KRELL does sound great at low volumes. I have been listening at low volume lately late at night since my headphone amp has not arrived yet. I was using the Benchmark LA4 preamp with the KRELL and that may have something to do with the quality since it is also great at low volume.