I'm not sure where you are, and what regions the vendor I'm using covers, but I did pick Beyond Solar. This was mostly because my neighbour, an ex-power plant

I'm not sure where you are, and what regions the vendor I'm using covers, but I did pick Beyond Solar. This was mostly because my neighbour, an ex-power plant engineer, with much more expertise in this tech than me, had selected them three years ago, and his son had gone through a similar process a month or so ago and also chose them. Quality of the equipment is the big factor, and I gather a lot of the significantly cheaper companies are cutting costs on the quality and/or warranty. I was recommended https://www.solarquotes.com.au/ https://www.solarquotes.com.au/ by several trusted sources for comparing options, though didn't end up using them.