The Price: $10 a month with 2-year contract provided you have a qualifying T-Mobile plan ($39.99 standard plan or $49.99 FamilyTime plan), plus $49 for the T-Mobile @Home HiPort Linksys Wireless Router. There's also a VTech cordless phone you can purchase from them for $59.99, or you can just use your own.
The Verdict: Fantastic. Over our Comcast cable internet connection, voice quality was super clear and the people we talked to all said it sounded like we were talking on a landline. Delay—what little of it there was—was on par with a regular landline.
Setup was easy, and you can use the Linksys router in place of your current one, or on your network behind your existing router. There are two SIM slots in it for two lines (only one is active by default), and contains E911 information. All in all, it's a very good alternative to getting a separate landline if you already have T-Mobile cellphone service, and at $10 it's next to free. The only downside is that it still doesn't work with fax, but their engineers are working on it. [T-Mobile]