Oh, I've been listening, and thoroughly enjoying, the best sound I have ever heard, anywhere. Truly. Not even that close. For a long time, many months, I've been doing one thing after another with never really enough time for everything to completely settle in. Its strange, for sure a lot of guys don't believe it, but its not just the major components a lot of things get better over time just being left playing music undisturbed. Mine finally got that the last several weeks and its pretty sweet.
Moab break-in is pretty short and sweet. Basically they sound great and I was enjoying mine right out of the box. They did improve of course but were pretty stable after only about 50 hours. If you hunt around the Tekton site there's an old thread where Eric says the same thing- full break-in is about 50 hours but if they don't sound great right out of the box send em back. Nobody sends em back.
Bi-wire and bi-amp you are paying for extra Cardas speaker binding posts. No way I would ever do either but for some reason some guys want the option and so he offers it. The $500 upgrade I got was the better Cardas binding posts, better crossover components, and mil-spec (whatever that means) internal wiring. I've been inside and can tell you the parts quality is quite high.
There's two Be upgrades. The cheap one is just the one tweeter. The expensive one is the tweeter and all 14 of the midrange drivers are Be. That's 15 Be drivers. At the time it was hard to believe how good the Moabs would be, and easy to assume the Be upgrade couldn't possibly be worth it. Now having lived with these a while its a lot easier to believe Eric when he says all-Be Moabs will go up against everything at every price. So yes it is an expensive upgrade, but you are then getting six-figure speakers.
There's a clue there to keep in mind. Just his normal everyday Moabs are so good its hard to believe until you get them. The comments you hear from Eric and others are, if anything, understated. These are truly remarkable speakers. To try and tell someone how good they are, well you see all the hateful reactions it generates from some people. Now imagine trying to say oh and with Be tweeters now its as good as anything from Magico, Wilson, etc, at any price. Total trigger warning, brain vessels bursting, H18 going overdrive. This probably explains why even with all my questions about upgrades Eric never really pushed all-Be drivers to me at all. But then after I had them and was talking to him one day about how awesome they are he lowered his voice and sort of conspiratorially offered that with all-Be it is a match for anything out there.
Never would have believed it before. No problem believing it now. If its something you can afford- go for it.
The speakers are big and the boxes are huge but I had no trouble bringing them in and unboxing them all by myself. Old Dominion will bring them to your door but not set foot inside your house. One box was (very) slightly damaged, the delivery guy was happy to wait and let me open and inspect while he was there. About the only thing worth mentioning here is it helps to have a high ceiling! Tried doing one in my 9ft high listening room, had to go back to the vaulted ceiling living room. (You could do it with a lower ceiling, but would need to either lay it down or tilt it, and I would suggest an extra set of hands for that.)
Packaging is cardboard not crates, which makes everything a lot easier. (I've had crates- no thanks!)
With questions your best bet is to just call and ask. If you get Eric he's always busy but usually impressively willing to talk as long as you don't mind being interrupted by work going on. If you get Tammy she can answer most questions, and has more time, so try and use her for general info and save Eric for the more technical stuff.
How close are you to ordering?