So, I figured I'd post an update as I just got the replacement from Garmin.
I am well rested and past my initial feelings of irritation when my Garmin failed -- it happens, no device is perfect. And as the discussion in this thread has highlighted, every device can fail, and redundancy is best, and thanks to modern technology with some of the cool options shared by some Expo members, it's easy for a traveller to have multiple layers of security for a fairly reasonable price these days.
I also wanted to share in the thread that as I was going through transferring devices, I started backing up my messages from over the years, and I came upon a bunch of messages from an adventure last year that was a bit tricky, and those messages made all the difference. This thing is worth it's weight in gold, truly, and I think anyone doing remote travel should carry one (or something similar). But, it's not a bad idea to also carry something else, too, just in case - I'm going to evaluate my options and bring a backup.