I don’t use wi-fi but I got a router with the n, not the g technology and used it for a couple of weeks (will be using it later).
I tried to follow directions the first time and get as much security as I could in my set up, but it took me a couple of more efforts to really max it out, I had to google the issue, reread things a few times, but then I think I finally nailed it.
I taped my complicated password and information to the router itself, and to my screen.
My impression is that is as good as it can be according to my research on the internet.