I first tried Merr, one of the other wifi vendors, before ResTech and ended up cancelling both. The problem I saw was not signal strength as claimed in the news article, but interference. As noted here on Slashdot by a fellow Madisonian, I see a million other access points downtown, making wifi very difficult to use since I live in an apartment in a dense housing area. The problem wasn't bad when the students were away in the summer, but they came to campus with all their routers.
What does this mean about the future of municipal wifi? I was hopeful that the service would work, and I'd go back if it did, but I'm afraid that until the interference issue is resolved in dense housing, municipal wifi will continue to have problems.