What features should I look for when purchasing a home solar power system?

Question by Greg H: What features should I look for when purchasing a home solar power system?
Just wondering if some experts out there could give some advice on what to features to look for and to “look out” for when purchasing and having installed a home solar power system. Of course I know sizing it properly is a big issue. However, are there certain brands of the various components that should or should not be used, etc.

What do you think? Answer below!