IP68IP68IP68I learned the hard way this year the value of lights that are IP68. I bought IP66 for a mega tree and boy was I disappointed by the end.As for the lighting protocol, I started with 2801 but am going to try 2811 this year.But for me after going through the expensive school of hard knocks, IP68 is the number that matters most to me. Protocol, voltage, and form factor can all be easily addressed compared to water ingress in my opinion.