I've had the phone for a week now, and so far so good!
The captioning isn't perfect by any means but it isn't good on live TV either.
It's not hard to get adjusted to though. There's a touch screen, and the display is actually visible for me. The screen is 4x6" and the letters are white on a black background.
You can store your contacts, scroll to the number you want to dial, touch it, and the phone dials the number for you.
The ringer can be adjusted in both pitch and volume.
One really neat feature is that it has a stand. You can prop it so it's almost upright. It's much easier for me to see and deal with it when it's propped up.
If your Internet connection is off for some reason, the captioning won't work but the phone still works.
The tech support people have been very helpful and accessible.