After doing a lot of research on a dwindling technology, I found this model to be the best combination of performance and value, with more emphasis on features and performance. The system has so many features, link-to-cell, Google assist, call block and yet they remain user friendly for those that don't particularly care about technology. Call quality, button layout, ergonomics, display are superb (just wish the screen would show all of the caller information) I.E. if a call comes through with a long name, the phone number will not be displayed, you'll need to press the arrow key to display the number.
What makes these phones remarkable is the ability to block telemarketers and robo calls. Block up to 250, you'll find that the memory fills up quick however. Talking caller ID is good, but no option to have it announce the phone number, only the name that is transmitted. Naturally some announcements are going to get botched up, but this isn't a quad core smartphone, but it is a solid cordless phone system.
As others have pointed out, Panasonic has opted to hardwire the AC adapters to the charging bases, save for the primary base station. This will annoy anyone who wants to fish the wire behind anything where space is tight. I have a night stand next to my bed, moving the whole bed just to hide the wires would be a big process. I used a 1 foot slim extension cord to resolve that issue and the a.c. adapter sits under the nightstand. Long story short, Panasonic should have made a detachable cord.
Lastly battery replacement is super convenient, no shrink wrapped packs with funky adapters that you'll never find replacements for in the future. Just don't put AAA disposable batteries in the phone, an older friend did that, yes they fit, no that's a bad idea!