Conclusion: The Panasonic KX-TG7745S Link-to-Cell Cellular Convergence Solution lets you consolidate your landline and cell phone into one device, or ditch your landline entirely.
Pros: Lets you keep your cell phone in an area with good reception. Talking caller ID. Can use your cell phone's ringtone (iPhone only).
Cons: Additional handsets are pricey. UI can be easier to navigate.