The first or fourth option would be my top picks. Q cells Q.Peak DUO panels are rated higher than Canadian, but the Q cells Q.Maxx panels quoted here are at a similar level, so very little difference.
I’d stick with the Fronius monitoring platform (Fronius energy meter is required) as it provides full detailed string level monitoring and consumption monitoring.
My top choices would be the first or fourth selections. There isn’t much of a difference between the Q cells Q.Maxx panels stated above and the Q cells Q.Peak DUO panels, which are rated higher than Canadian panels.
Since the Fronius monitoring platform offers thorough, detailed string level monitoring and usage monitoring, I’d continue with it (a Fronius energy metre is required).
Are there various companies represented in each quote?