You missed out on prior discussions why no router stands out of the crowd for distance. Let's repeat it so you don't have to read it in another posting.

All the makers are using the same rules for power and bandwidth. This means that no router is much better than the next.

I own the wnr2000 as well as a few other models. It is possible to get more distance by using routers as a WAP. This is noted in this forums sticky post about post 18.

As to your speed loss it's usually minimal where the internet is concerned because most of us get 10 or so megabit internet connections. Even at losing 75 per cent of the wifi speed that's more than enough to run at top internet speed.
Bob