Just returned from a two week float in the arctic depending on the InReach for all communication. This device does exactly what it's supposed too and does it reliably.
Texting is a little cumbersome but with a limit of 160 characters not a major problem. It does create some interesting massages.
Battery life is excellent. We turned it on twice a day to send and receive a message twice a day. We did not use tracking. At the end of the trip we had a 44% charge left. Tracking is unnecessary, each message has a very nice link to a map with your precise position, superb fot our bush pilot pickup. We did carry an Ankor rechargeable battery charger. Just for kicks we tried it on our last night, it works fine. Recommend the Ankor for a long trip or if you are chatty.
Durability seems excellent, we tossed it around in packs, dropped it in sand, submerged it in a strainer and it kept on working.
Cons- Presets are need Lots and lots of work. Keyboard is cumbersome.
Overall, this does exactly what it's supposed to and does it reliably.
If you need to be in reach in remote country, this does it cheaply and reliably. It's pretty much found a permanent place in my pack.