You are really comparing apples to oranges at this point. SPOT is a one-way (outgoing only) device while the Delorme InReach is a two-way (incoming and outgoing messages)device. You are going to pay more for a two-way device. The InReach is very new and I have not seen any definitive independent reviews at this time. You likely need to determine whether you want the incoming messaging capability and then start narrowing down vendors. The SPOT devices are likely always going to be cheaper because of their limited functionality.