Nicely done review! DP3 has split phase 240 and the Dabbsson doesn't is the biggest difference to me. I have used 2 Renogy 1000s in the same config as your Dabbsson setup and they DO have split phase or single phase, but mine run down quickly running my well pump. So if Dabbsson could engineer in a split phase hub that would be huge, especially at their price point and expandability. Again, thanks for the info and the effort to bring this review to us.