I went looking for a cordless phone because I wanted to use a headset while working on the computer and phone at the same time. Headsets for corded phones are hard to find and pricey.
After a lot of Googling around, I discovered that Panasonic phones do have heaset jacks. (Several other major brands did not!)
After that requirement was met, this phone then also had the benefit of using "regular" NiMH AAA batteries which would be easy to replace. Thank you Panasonic! Even on just 2 AAA batteies, they claim 13 hours of talk time, and 11 days of out-of-cradle time! That's way better by about 6x in both specs than my old phone!
It also has speakerphone capability - another plus, but I prefer the headset when I want to be handsfree. Beyond that, other reviews indicated good sound quality, and good range. I can vouch for the good sound quality, but haven't pushed the range yet. (Well, Ok I do wish the volume could be a bit louder from the ear-speaker, but I won't ding it for that. It's plenty loud in my headset, and quite clear.)
Other nice qualities include nicely sized buttons and numbers. The display is large enough to read easily, and it diplays the time of day while the phone is not in use (a trivial but nice feature).
Programming it was OK to mildly confusing. Not much better or worse than most consumer objects. They're trying to make a lot of features available through only a few buttons.
One review I saw compalined about a lag in connection time after picking the phone up. I have not observed a lag. This phone is faster at connecting that my old GE 1.8 GHz analog, and as far as I can tell connects as quickly as I can pick it up and turn it on. (It also has a feature that you can activate that turns the phone on automatically when you lift it from the cradle.)
Overall, I have no qualms at all with this phone. It meets my expectations nicely. It feels solidly built. It works well.