This thread is...man...just...I don't know.
I'm going to give some opinions and some facts.
Opinions: What makes Zon basses so special?
For me, it's that neck. It is stable. It is playable. The fretwork is impeccable. And for an 8-string, there won't be many other options that small. Wood necks will require more material to hold the tension of all those strings, but the composite of a Zon neck holds it just fine with a smaller profile.
The bodies are comfortable and well-balanced. The fit and finish is great, but nothing completely unique to them.
Joe curates the equipment that goes into his basses as well. He really works at pairing the woods with the electronics to achieve what he wants. But, and this is my opinion, the Sonus-8 that I have had terrible electronics for that instrument. The whole reason I ordered a custom Zon was so I could have one built around the electronics I want without taking the one I have and hacking it up to swap pickups and electronics. As I mentioned a few posts ago, Bartolinis are not something I would strive for, and the fact that the Sonuses have basically a proprietary-shaped pickup makes swaps near impossible without routing. Essentially, if you want a Zon, you want it for all the things that Joe does.
Zon basses are offered with many options, especially if you reach out to them. The price of these instruments is nowhere near the highest-of-end instruments of a Wal, Fodera, Ken Smith, etc., but are closer to the off-the-rack high end basses of Warwick, Alleva-Coppola, etc. I wouldn't expect photos during the build of my Warwick the same way I would for a Fodera.
Facts: My experience so far.
I met with Joe in person at the end of June and put down a deposit on a custom Sonus-8. I have a particular electronics package that I want, and he was fine with that. The pickups and preamp have been delivered to him. I have exchanged several emails with Joe so far about some custom details I want. He has responded, provided his opinion (when appropriate), and asked for my opinion (when appropriate). The email responses are not immediate, but they never take longer than a week.
Opinions:
Nearly 4 months after placing my order I am confidant that no work has started on my instrument yet. I'm fine with that. Joe estimated 12 months for my build. I will be curious to see how close to that he gets.
There are a few other pieces of hardware I have called out for my bass. I am leaning towards ordering them and providing them to him as they are not items he normally uses. Being that there are still 8 months until his estimated delivery, this will eliminate the excuse of supply-chain issues. I totally understand that this is an unusual thing for the customer to do on a custom build, but I have called out items to an unusual level of granularity. I have very few basses that I haven't modified in one way or another, this is just my chance to get this one right from the beginning. This goes against my earlier statement of "Essentially, if you want a Zon, you want it for all the things that Joe does": I don't want Joe to call out every piece of hardware that goes in to this thing; I basically want his fit and finish on the hardware that I want.
Conclusion:
I feel bad that there are basses that have been on order for years. Any way you look it it, that's not right. I may be wrong, but they seem to be the more unusual basses that he builds (Vinny and Legacy, specifically), not Sonuses. I'm sorry that this is some customers' experiences, but this doesn't deter me from wanting what I want, which is a Zon 8-string set up the way I want it. There really isn't anyone else who can build this bass (G.Gould or Modulus would need a new mold for a 34" 8-string; anyone else would be wood-necked). I have a Sonus-8 and love the playability of it but have been dissatisfied with the amplified tone (previous attempts at replacing the electronics have been even more dissatisfying). This is the instrument I want, and I'm along for the ride. The only other "custom" basses I've ordered have been selected from menu options (a Carvin LB76F in 1995, and a Warwick Thumb BO 5 in 2001), so not true customs like this one will be, so I don't have a frame of reference for what I expect from the builder. I just know that this is the instrument that I want.
If you've read this far, I'm impressed. My wife accuses me of being too optimistic often, and after reading this thread, I'm still optimistic, and maybe a fool. I think we're all assuming other people have received their instruments in an acceptable time, but I don't recall reading any of those posts. I've been pretty quiet on this thread because I don't want to be the guy who's psyched about getting his new custom Zon on time when others have been waiting way longer than is reasonable. Time will tell what happens. But I felt I needed to add another opinion as there are several people in this thread who have unabashedly shared their opinions of the current situation even though they have no skin in the game. In the end, this is Talkbass, and that's what we're here to do, so I'm sharing my experience and opinion now, and letting you know why I feel the way I do and why I do have skin in the game.