Which is better for solar inverters - High volts low amps solar arrays vs low volts high amps solar arrays?
A high voltage array can use smaller cross-section cables to connect it to the inverter, or can be sited further from the inverter, than a low voltage array.
For 'reasonable' voltages, in the several 10s to several 100s range, there's not a lot of difference between the efficiency of commercial inverters.