Hi everyone,
I’m about to spring for a ResQFix 460 for my kit.  My partner is a professional landscape photographer and I’m her guide (aka schleper).  We spend a lot of time out of radio or cell phone range in the Everglades and Bahamas.  Over the years we’ve had our share of drama but so far so good.
I first looked at a PLB a couple of years ago and became a firm believer.  I waited for more competition to improve design and lower price.  Hasn’t happened yet but I’m ready to make the move.  
But, if I buy one tomorrow it will almost guarantee that a new version will come out next month.  Any word on updates to the ACR product line on the horizon?
Finally, I have looked for specific details on the limitations of the system without much success.  For instance:
-	what is the SARSAT coverage in south Florida – how often is a satellite within range of the PLB?
-	how long does it take for the PLB to acquire a fix
-	how does overhead canopy affect GPS reception?
-	And lots of other questions . . .
I would appreciate any information anyone would provide or point me to.
There is little doubt that I will own a ResQfFx within a few days.  Hopefully, I will never need it but if I do I just want to know its limits.
Thanks!