I love this mug - I bought my first one when I had my first baby and I can't tell you how much I have appreciated a hot cup of coffee all morning long with babies and toddlers at home. I did have two charging bases eventually fail (they lasted probably 2 years each) and finally bought a whole new unit because the inside was getting pretty scraped up and peeling. It lasted probably 5 years?
Few weaknesses I didn't love but weren't deal breakers: It doesn't stay charged that long away from the charger but I don't mind, I'm home most of the time so I just try to keep coming back to home base throughout the morning. If you use cream and leave it on the charger for a while, it can kind of cook on top and make a bit of a film which is kind of an ick but easily spooned off. Way better than microwaving the same mug over and over again!