I priced them out along with Revision and Assured. Ended up going with Revision (since they do hear pump installs as well) but I thought MSS was decent. I would've been confident in choosing them but I felt Revision and Assured were more personable and walked me through a lot of stuff in the process. Like when looking at quotes and systems, divide the cost by the amount of watts your array is set to produce (i.e. 6.75 kWh array for $20k; 20,000 ÷ 6,750 = a cost of $2.96/watt). I found this hopefully when I was researching solar last year.

If you're still getting quotes, I recommend checking out Assured. Recommended Assured to a neighbor and they loved Assured. They did a 38 panel array in two days. It's harder for me to recommend Revision now since they're so overbooked.

Hope this helps, apologies for the word vomit!

Edit: this is all assuming you're in the Southern Maine area