My aging Apple Airport Extremes (the flat MacMini-like units) were duds from the get-go several years ago, never performing well even 10 feet distant from the computer! But they had been getting more and more flaky and unable to deliver acceptable performance.
So today I visited the Apple Store today, and bought two of the newest model thinking to replace the two older ones.
Boy was I wrong (in a way)— a single unit of the new model covers all the range of the two older ones, and does so delivering 20 Mbps to a certain key location versus 1-2 Mbps for the old model. That’s 10-15X faster in my real world scenario. WOW!
B&H Photo has the Airport Extreme for about $185 (Apple Store price is $199).