Very happy with the Renology panels from Amazon.
I bought their starter pack for something like $315. 2 -100watt panels plus connectors and PWM controller.
If satisfied, I can add 2 more and either use the same controller or upgrade to a MPPT controller next year.
My trick was mounting on hinges vertically on the sides of the flying bridge. Out of the way when not in use, and can be tilted from 90 degrees, to flat like most panels, then to over center to get sun angle from the other side of the boat. The panels are very efficient this way from sunup to sunset. Last night right up to 15 minutes prior to sunset, one panel was still putting out enough to overcome parasitic loads of TV, computer charging, chartplotter, anchor light and cabin lights...so close to the rated 5+ amps. Which is nice getting a start on long winter nights at anchor.
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