I consistently have really sketchy coverage in downtown Bellevue, Washington, especially along 108th Ave. This is an area where Microsoft has several offices, as does Expedia, eBay, Concur, Oracle, and many other high-profile customers.
My 4G coverage has many deadspots, even around the Transit Center. It often drops back to 3G coverage, where my Sprint and AT&T friends have great 4G coverage and response.
Please upgrade your coverage in this critical area!!!!