Have they resolved the problem of it losing its settings? I purchased one a year and a half ago, but after a month, it lost the settings (LED color, deg. F, etc.) every time I rebooted. Turns out, it was burning the backup battery very quickly (on average, in a couple of weeks, judging by other threads on other forums). Changing the battery would remedy this, but you'd go through a couple of batteries every month.
However, looking at the pictures in this new review, it seems the backup battery is missing. Perhaps Tt removed it and the HC13 saves settings some other way.
Would the testing have revealed if it indeed keeps its settings for more than a few weeks?