In reply to NottsRich: With the Suunto you have to turn the GPS on, in normal watch mode it is off.
The Baro altimeter displays pressure when stationary or nearly so and height when moving.
It will give a grid ref for a number of different systems, UK, UTM etc.
Compass is significantly better than all the previous ones I have seen, you do not have to have it horizontal.
Garmin Fenix will be better for location / hiking than Suunto.
I got the Suunto for running as well as hiking, it is much better than the Garmin at this.