So many camping style panels on the market, most people look at Max Current output, but what about Max voltage output?
Apart from production quality and silicon quality, my question surrounds Max Panel Voltage

As MPPT controllers have such a wide range of input voltage, is a higher max voltage beneficial when selecting a camping panel?
I know we all look at Amp output, but i see some panels quote 18v Max and another might be 22.5volt Max
The new breed of Projector IDC DC-DC (MPPT) chargers have increased Solar Input voltage from 23v Max to 29v Max.
These are all for 12volt systems

Or is it better to start with a voltage closer to what you need so the MPPT doesn't have to do so much work converting it to a useable voltage for charging?

I ask this, as Kogan have an affordable range of panels

The current output seems great, but the voltage seems low compared to others

I have always liked the idea of a higher panel voltage, as that would allow better voltdrop on the connecting lead that is run out from your vehicle, which might be 5 or 10M long.
Of course this means the MPPT charger is mounted next to your battery, not on the panel.