First Watt F7 owners, impressions?

Let's discuss speaker and preamp pairings you have found to work the best and why. I love this amp but maybe haven't been able to get the best out of it yet. 

• Preamps: DIY Pass B1- great except for dynamic scale and deep bass, of course with no gain I also had to jack the volume a lot more; Manley Shrimp - better slam, more density, 12db gain helps a lot overall a better match. Want to try: microZOTL, Pass x-1
• Speakers: Gallo 3.1 - easy to drive though only 88db sensitivity, controlled well by the F7, plenty of tuneful bass, plenty of volume using the Shrimp and impressive soundstage; Devore gibbon 8 - just acquired these and am getting used to them, definitely leaner and less bass but I like the midrange and punch a lot, soundstage is excellent too, and their look and footprint appeals. Want to try: Harbeth monitor, Spatial M4, Zu Soul, all of the speakers Srajan of 6 moons owns!
  

So far I agree with all the reviews of this amp I've read, their observations coincide with mine. Do you find the same?
Ron