if your going to drop some cash id recommend the Suunto ambit. the price is pretty steep and 500 but the amount of features you get is unbelievable. alto, baro compass with a heart rate monitor and the ability to download new app software to the watch and customize displayed information. its pretty cool seeing your heart rate graph being displayed on the watch and seeing the jump during a firefight.
heres the type of info it tracks from the last time i went out
Suunto
Suunto 1