Which FlightFeeder generation is better?

I can tell you don’t have rain there, because now you have cables going inside your box from top openings. Those would leak a lot of rain water inside (it will, no matter how good you seal)! Usually you go in only from bottom, and provide a drip loop there.

For you the only option is to place the antenna as high as you can…with proper water proof sealant…as g6 has beast board with gps so theoritically you can have better mlat.

This is a deceptive impression. Optical illusion. All the cables go through the hole from a bottom…

Now that you said that, I noticed it. Sure it is.