I would assume any of them would work. I havent gotten to that install yet myself but was looking at similar and those looked promising. Just they need to be installed properly.
Look up rivnuts. You drill a hole put the nut in and it sandwiches the metal securing it. I used 1/4" and it feels good to me. A definite improvement over my last solar set up/install. Also I dont see it mentioned much but I use silicone over every bolt just in case someone were to try and...