I was actually referring to putting Thundurus/Eelektross on my Tailwind team as a counter to opposing genies. I was thinking of using Eelektross for this purpose, but I've been hearing from some people on Skarmbliss that Thundurus would be better for me, and would like a few more opinions if possible.
If so, I would still go with Thundurus. Run it with HP Ice for Landorus and Thundurus, and run Thunderbolt for Tornadus. The reason Thundurus is preferred over Eelektross is because Tailwind is too prevalent so never assume the opponent is not using it before you see their team. This way, it'll still be a speed tie between your genies and the opponent's genies if you and them have Tailwind up simultaneously.