I love my InReach Mini, I have it linked to my phone. Haven't used tracking much but is great for 2-way communication when I am out and about on my own (often fishing up to 50km from the highway solo) or out in the groomer/sled. I also carry it in the truck when driving up here just in case, lots of dead spots on the highway. A little more expensive than the SPOT unit it replaced, but the piece of mind for my wife and I is well worth the monthly subscription. Not sure on the SPOT X, I like the integrated keyboard on it but have not used it and from reviews I read the InReach satellite constellation is more reliable than the one spot uses.