I get the risk vs reward of the Hollywood Electric Elcon, but for the good of Zero owners, I think we should have a better value option.
All of these options have tradeoffs. Even the Eltek Flatpack builds exist within this space of tradeoffs - sure, they're inexpensive and can be made reliable if you have the skills, but hardened for vehicle travel they're not!
The Hollywood Electric Elcon with J1772 adapter is $1700 plus tax and shipping. For that price, I would rather have the clean looking, easy to use Zero Charge Tank.
The Zero Charge Tank is not available for that price - it's available for $1000 more (possibly not including dealer installation). But I'm not criticizing your preferences - they're absolutely valid. The Elcon 2500 packaging was created before the Charge Tank and has less investment put into it. In exchange, you get a simpler product that works for a different (less convenient) use case. It's just market differentiation.
A 1 hr Fast Charger like the Diginow would be great, but I still think $3000 is steep and that whole effort has stalled out for Version 2 to come out. Also, the one person that I know that has the Diginow will not let go of his Elcons because of Diginow issues.
The effort stalled because the V1 arrangement did not scale, more or less, which explains both issues. It's not a coincidence that Elcon was chosen for the newer effort - Elcon seems to manage quality in a very reasonable way because they target forklifts and light trucks. I think V2 will have a different story even if the price point doesn't change.
I, too, am keeping my Elcon 2500 until I have a reliable replacement, which is very likely one or two of DigiNow's V2 chargers; this is partly to have a backup and partly to use two J-plugs at the same time.
And I think the price point per power density / convenience relationship will not change for a while. It's just very expensive to get engineer person-years dedicated to make these products and get them fully tested and built right to last on vehicles, and to ensure that the manufacturing run is large enough to spread out the risk (again, a very good reason that the best parts of a Zero get tested first on the forklift and light industrial truck market).
For what it's worth, I decided to start elaborating on these options on the wiki. Eventually it should be a straightforward product comparison:
http://zeromanual.com/index.php/Zero_Aftermarket#Level_2_AC