Looking for a high performance wireless router

What do you mean by "high performance" and do you care about wired routing speed (for a fiber or ADSL+ Internet connection)?

Here are a few articles that may help:

Review: NETGEAR RangeMax 240 Wireless Router
http://www.tomsnetworking.com/Reviews-256-ProdID-WPNT83...

MIMO Face-Off
http://www.tomsnetworking.com/Sections-article149.php

More popular? None exists so I doubt there are any popular ones. There are Pre-N Wireless devices. What the vendor thinks the standard will be when it's complete, ratified, tested and produced.

Of the budget wireless gear Buffalo makes the best hardware/software combo.

If you want MIMO

Buffalo MIMO Router/AP

Just signed a deal with Best Buy so it'll be local fairly soon but you can always get technology gear cheper online. Newegg.com