I get around 45 with an 20 panel/8K Qcell and enphase IQ8 array.
When you say " when you have enough demand" does that mean your setup will stop producing once and if it detects a full battery and no load not sending anything back to the grid?
I've always liked the sol ark outside its min startup voltage.
My experience with tranformerless inverters is that they dont like load imbalances and all my friends that use these designs end up adding a balancing autotransformer. I think the victron has the edge on the sol ark here.