FitBit products die wether you charge them or not.
They produce very poor quality devices.
Hmm. That's not been my experience.
I got the original series Pebble the Christmas before last, and it worked [Great, Awesome, Love It! -> Works OK, with some occasional screen artifacts -> Starting to get glitchy, almost unusable screen and stopped taking software updates -> Pretty much dead, can't even read the screen when it decides to wake up at all] over the course of the next ten months. Last Christmas I got a FitBit Blaze which is still going strong. It's not nearly as flexible as the Pebble was in terms of customization and adding options, but it does what it said it would do and the heart rate monitor is very reliable. The battery doesn't last quite as long as the Pebble did, but I still get a solid 5 days between charges after a year of use, so I can't complain.
OTOH my husband has a Pebble Time Round that he purchased only 3 or 4 months ago, and so far he seems happy with it. I think both platforms have a lot to offer, so I am sad that the flexibility of the Pebble platform will now (likely) be lost.