Just pull the trigger...
I know that this thing has a bit of a hefty price tag, point of fact it cost more than my Movado... but its worth EVERY PENNY!!
If you are serious about your training and want a tool that can provide you with an immense amount of data, this is it.
Suunto keeps updating the software, you can make your own custom apps, it uses scientifically proven metrics to help you ensure that you are not over-training and it tracks all your activities on a very easy to use web interface (movescount.com).
Bottom line: I LOVE this watch and its been extremely helpful in my training and my adventuring.