We get full coverage (ie, "Excellent" signal strength) throughout our entire 2500 sq.ft., 3-story space.
We shove the base station into a walk-in closet with our servers. Works fine. Everything is out of our sight. Makes the place a lot tidier.
I nixed the idea of a 2.4ghz phone system, b/c I was afraid of interference. It works fine with 900 Mhz.
All in all, for the price, i'm pleased with Buffalo's products (this is the third base station i've installed, and i've never had an issue.)