Last year, Globalstar (parent of SPOT, possibly being purchased by Thermo) hinted at a "NextGen Spot". In April of this year (2018) a corporate release disclosed a "Two-Way SPOT".... "to be released 2018", so one might want to wait a bit to see what this product might offer. On the fence for a tracker or PLB?, review previous threads on RAS re SPOT 3 v InReach. Seems there are more complaints about "spotty" SPOT performance. Someone recently mentioned InReach Explorer was down to $200 at Cabellas + subscription. I own a SPOT.