The solar panels themselves are now dirt cheap relative to the full cost of a system. Right now the highest cost of a consumer purchased system installed by a professional is currently the professional. It's been that way since about a decade ago when the major solar module manufacturers were charging under $1/watt and inverter manufacturers also went under $1/watt. There is also the permitting and electrical work with a professional install but usually the people are costing twice the cost of the equipment being installed.
What is the price difference between a decent panel from a known company versus the others you've listed. 20 cents per watt? For my system the difference isn't even a 4 digit number and I'd rather not need to climb on the roof to swap out bad modules if things start going south.
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