In reply to Bloodfire:
I'm happy with my Casio ProTrek.
+ solar powered, no battery worries
+ robust. It's been soaked for days on end, been up Dolomite chimneys on my harness, never missed a beat, nary a scratch
- altimeter only updates every two minutes. Not a problem for me for hiking or climbing; could be an issue if you were relying on it to avoid skiing off a cliff in poor visibility.