Routers are like graphics cards, you can read specs and marketing nonsense till the cows come home, it's all about benchmarks, benchmarks and reviews.
If you find some good reviews go for it, but keep these in mind:
* You need draft n cards to get the draft n signal
* Mixed signals (any combination draft n and g/a/b) can reduce the performance of a router dramatically, check out benchmarks in the area if you can. You might only be using the g signal for now, but you'll probably want to upgrade in steps to n eventually.