I'm not sure why people think your insurance goes up - mine did not - or this somehow voids a roof warranty, it leaks, etc. The cleats (for the panel mounts) are screwed into your existing roof with an epoxy sealant that is probably more water proof after install than before. In fact, the only roof issue I have ever had in 18 years is from the rubber collars around roof vents (plumbing vents) that dry out over time which had nothing to do with the panels.
Like most things associated in life - you get what you pay for - and the quality of product and install is usually directly tied to price. I went with SunPower (which has an all black panel) and the installer was top notch. Any post install issues were promptly addressed.
As far as RE appraisal, from what I recall the township cannot increase your value due to panels. In fact, township zoning could not prevent a rooftop install as this was/is covered by state law. Of course it has to comply with electrical code. With regard to resale - since I own the system the annual savings going forward would accrue to any potential buyer and essentially provide a free month or more towards a mortgage payment for any potential buyer. How could that not be a benefit when I go to sell ?