I only have the N laptop with the N router. The laptop has a cheap wireless card which is single stream so I think the best I could do is 130, but I can't get more than 65Mbps so something is not right.
I installed inSSIDer and also Xirrus Wi-Fi iinspector and both obviously show many neighboring networks. It seems as when I was on ch. 11 interference wasn't too bad but ch.1 seemed even better so I switched to that. Doesn't seem to matter as I still get the disappearance.
I wish I could attribute it to interference but can my SSID only disappear and others still be present due to interference? I think a different router has to be tried to be sure.
Every fairly inexpensive N router I read about has some poor reviews. For my needs (no gaming, no multiple users) I thought something in the N300 category, $30-$50 USD would be the way to go. But if those are problematic I may have to upgrade.