I have a Renogy 160 still in the box, never used. Would offer it for a good price. As for quality - my own experience was uneven. Some were good and worked well for the 4 years I had them, others failed or showed signs of leakage quickly, like within about 60 days. Mine were installed in a location that was frequently awash with sea water (the amas of a trimaran). That says a lot for the ones that survived. The reason I have the 160 is that it was bought as a spare for my last boat, and I didn’t include it with the sale of the boat.