Congrats. To me, this was a textbook way to search for and buy speakers even though ironically it started out as a search for a new amp. Initially I was going to ask if you looked at another brand, but after reading what you've done here there's no point to the question anymore. You did research and found a speaker that hits on all your important notes, and you found a way to hear a couple different models to determine if they actually rock your world, which they obviously do. And, you bought an amp that will work synergistically with your speakers so you get the most out of them and lets you continue to use a tube amp, which was another one of your desires. Combine this with the fact that these speakers seem to couple with rooms more easily than many, and the possibility of failure has been minimized if not completely eliminated. Well done, and too bad more audiophiles don't take the time or have the opportunity to do what you did here. Let us know how it works out once you have everything set up and broken in (sounds like the latter could take a while).
