I've ridden all three reflex, recoil and response. To be honest I think they all kind of ride the same - not a huge difference between them. But to be picky I think I would probably go with the recoil for boat because I think it has a tiny bit more straight up pop. But the reflex has those reinforced edges for rail damage plus the edges are turned up slightly for rails. I thought this would make it more slippery and not track as well but I didn't notice the difference. So it rides pretty similar but seems like it stands up to rails slightly better. I didn't notice a difference in landings between them either. So in summary, if you're riding mostly boat then I'd recommend the recoil just to have a slight advantage with your pop, but if you find a good deal on a reflex or like the graphics way better or whatever then you'd be ok with that too.
Ha, I realize that's not a ton of help but what I'm trying to say is you'd be fine with either one.