I'm not sure this is directly applicable to the OP, but my house happens to be in one of those weak signal areas. To my surprise, the N900 with T-Mobile gives me excellent signal strength inside my house. The Motorola Droid on VZW gives me either 0 or 1 bars and the call quality -- when I can make a call -- is terrible.

I realize the difference could be that T-Mobile has improved their coverage in my area while Verizon has not, but I also think the N900 cellular radio is doing a better job than the one in the Droid. Purely subjective, but that's my opinion.