> I’d be surprised if Garmin were all that much better at putting GPS in a tiny housing than Apple.

Given Garmin’s long, long history as a manufacturer of (often very small) GPS devices, I personally wouldn’t be.

(I also know for a fact they do mapping better. This summer I was in the South of Italy and only Garmin accurately distinguished between small public roads and long private driveways while both Google and Apple royally messed this up.)