@solar8484 I'll PM you as soon as I can.
@Sanwizard PM sent to you as well. Due to shifting prices in the current environment, I prefer not to post prices publicly but anyone is welcome to message me at any time. I'll try to answer as soon as I can. If I take a while, feel free to PM again. Sometimes messages get buried.
When not using a hybrid inverter, I see very little reason generally not to use an AC-Coupled architecture when design/installing for medium to large homes and especially mini/micro-grids for villages/multiple homes. Even the latest updates to the Deye hybrid inverters include frequency shifting the output when used in off-grid applications for smoothly controlling the output of micro/string inverters.
The Deye hybrid inverters also respond to FW control on the grid side making them perfect for building micro-grids. In many applications, with frequency shift control available, there is no need for direct communication (MODBUS) between units outside of perhaps between the stacked grid-forming inverters at the core. Assuming there was more than one of course.
Other Deye inverters could be added anywhere along the network (super for boosting the voltage throughout the network, helping to prevent voltage drop on the last mile) and the frequency shift communication would be more than enough. The AC-Coupled inverters would simply pump their available PV and battery capacity (as the sun fades into night) into the network as the frequency from the core grid-forming inverters permitted until their battery was drained or reached the preset cutoff. The AC-Coupled hybrids would then just reboot in the morning as the sun rose, reconnecting to the network and once again helping to power the loads.
If there were loads connected to the AC-Coupled hybrids, it would be wise to program them to simply disable grid charge. This would allow the loads on the load side to continue to be powered from the core inverters (uninterrupted) once the maximum discharge was reached on the local inverter.
I know that was quite a ways off-topic but perhaps it will help someone along the way.
This may sound biased (and this is a general statement, not directed at
@Sanwizard whatsoever) but I don't really feel it's possible to compare the Voltronic or even Growatt units to Deye inverters. Deye inverters IMHO are significantly superior in both hardware and software. They are one of very, very few low-voltage battery inverters on the market that are truly IP65. IP55 at least depending on how you install it. This means your internals will last significantly longer (assuming properly cooled) than standard inverters where the components are available to the elements. This includes Victron inverters which are sadly not even close to IP55.
There is a very, very good reason SMA inverters are known as one of the toughest/most reliable inverters on the market. They simply do not fail unless installed improperly or a disaster happens. IMHO one of the major contributing factors to this is the IP55/65 design/rating (depending on the model). If it's installed correctly, you can open one up 10 years after it's been installed and the internals will look as clean and pristine as the day it was new.
Deye is no different. Make sure you install them right (physically and electrically, keep that IP65/55 seal on the cables entries) and they will last.