Most things that cause issues can't be seen
2 routers on the same channels - normally ok
A router, 3 cordless doorbells, a wireless tv sender, a baby monitor and a few wireless keyboards all on the same channel - this is mayhem
Inssider only shows the routers so you would choose scenario B even though its actually worse than scenario A. As inssider would make scenario Bs channel look less crowded
You often find routers all go on the same channel. Often as its the one less crowded in reality.
Doorbells etc are the things that cause major wireless issues not routers. They're often not very kind in the way they operate compared to routers & can easily make a wireless channel unusable. Multiple routers are much less likely to do this.
It's what you don't see that you need to be worrying about.
Edited by ukhardy07 (Thu 27-Jun-13 15:41:07)