I don't want to go for something as expensive as the Otterbox Armor1900 - which is basically indestructable and also costs about £70. And I don't want to go for something as generic as an Aquapac bag as they seem to be just water proof bags which aren't going to work very well for things like taking pictures whilst still in the bag.
I'd like to be able to take my m600 out on my mountain bike in the rain whilst running Memory-Map. I don't need it handle bar mounted and it doesn't need to be smash proof. I just want to be able to stick it in my camelback (backpack) or jacket pocket and know that no matter how much it rains, my m600 won't get wet and stop functioning.
I'd prefer it if I could use all functions (i.e. see the screen and take some photos) would pretty much function inside the bag. And it would be ace if it didn't turn my lovely small phone into a huge water proof bag I had to lug around. Something small and snug would be perfect.
Imagine one of the silicone cases, nice and snug but make it waterproof and see though (for camera and screen use) and you're pretty much there - although I don't care about bash resistance in this case. Just water proofing.
I've rambled enough...