Light is Right
Great idea for a lightweight axe. A full aluminum head construction of the Corsa make me a little wary about it's performance and durability, but the added steel pick and spike on the nanotech put my fears of this lightweight axe to rest. It's been very durable and the pick and spike have penetrated ice very well and without hesitation. Most people won't believe how light this guy is until they hold it. Well worth the extra money.
For sizing, I'm 5'8" and use a 50cm (I like my axes a little shorter). A 60cm would also work for my stature if you're looking for more of a glacier travel style axe.