I was looking for a Kyocera panel once and went into a solar shop in Quartzsite and asked if they had them, the guy said "No they once put out a run of 90,000 bad panels, so we won't carry them."
I asked him if Kyocera made it right, and he said "Yes, as far as I know they made every one of them right and made it as easy as possible for people."
I said, "Are you crazy, that's a reason I'm going to buy one!! Lot's of people make mistakes, very few make it right." I walked out.
It's not good that Renogy made a bunch of bad panels, but it's great they are making it right!
It's the reason I'm recommending them. You go by non-name Chinese junk for just a little less and no one is going to back them up--ever!
If you want to build a high-end system, buy Kyocera, if you are on a tight budget, buy Renogy. If you are a really tight budget, buy used!
Bob
Bob