Lot of pyramid scheme solar companies in Cali… got dragged to a seminar for one and what I can gather before they tried to get me to sign a NDA is Enphase are i7 & i8 inverters are solid because to the best of my knowledge they allow each solar panel to operate as in independent circuit. This helps when if/when the power grid goes down and because for other systems your solar panels go down the moment the grid goes down. Other than that mainly comparing the capacitance of the batteries it appears that 10kW appears to be pretty solid, but also this was a limited view from somebody with an amateur enthusiast background in electrical engineering so take this with a grain of salt. I would recommend full transparency on the commission of the salesperson as well, because the company who’s seminar I attended seemed quite predatory with their commission tactics and that instantly concerned me.