I am looking for a personal locator beacon as I often boat alone. Does anyone have any experience or comments on either the Ocean Signal PLB1 or the ACR Electronics ResQLink+buoyant ? The are comparably priced and seem to both provide the same function. The only difference I can see is that the PLB1 is slightly smaller and has a 7 yr battery life as opposed to the ACR battery life of 5 years. Any thoughts would be appreciated.