Love their stuff, but I've had nothing but bad luck (timing) with SW.
Purchased a Petrel 1 and within a month the Petrel 2 came out (compass feature added). Mine was the old hardware, not upgradeable...
Perdix came out, replacing the Petrel, but no AI
So I waited a bit, and got the Perdix AI, only to have them come out with the watch sized Teric PDC almost immediately after - though it isn't really overly desirable to me being watch sized, there were some features...
Fast forward, I got Peregrine computers for the wife and daughter. Wanted AI and compass, but it was nowhere on the horizon. Perdix AI too costly...
Then the new Tern TX comes out, but I'm not really in the mood for the cost with 2 Peregrines here. Also really like the larger form factor screen of the Peregrine. But, still desired AI and probably the compass for at least the daughter. Wife uses a console mounted Peregrines with a SPG and a compass in it.
Now the Peregrine comes out with AI....
The perfect DC for them....
I've sunk too much money already....
Petrel 1
2x Perdix AI
2x Peregrine
Shearwater, love/hate....