I would personally go with the 802.11n instead of 802.11g w/MIMO, especially if you are upgrading your network. Theres really no such thing as a "gaming" router. I've seen a few and all they do is set priority to certain devices so that in theory, you will have a lower ping even if someone is downloading something on another computer. I've tried a few of these without much success.Just go for a wireless G router that supports MIMO
so, what is MIMO? what does it do?