TCX_757 and Fargoo,
just a small technicality on the GE90 'composite' blades. They do have 2 major titanium components in their structure, the leading edge strip to chop up the birdies and an upside down L-shaped/boomerang feature at the trailing edge/tip, not visible as it is indisde the carbon weave, this is to absorb the shock/impact of hitting the bird, and prevents the trailing edge of the blade exploding into a mess of carbon string. So GE couldn't get away totally with making a 100% composite blade.
Interesting note - the Museum of Modern Art in NYC has one blade on display as a 'work of art'.
http://farm1.static.flickr.com/64/21...g?v=1155452574
Regards,
N1 Vibes