Unfortunately, it's tough to compete with Shimano's alloy cranks on weight. None of the non-carbon Stronglight cranks are all that light. The TA cranks use square taper bottom brackets which you may not like (if you are going for a "latest tech" type of build).

This Sugino crank looks interesting but it seems like a Japan-only item: http://www.suginoltd.co.jp/japan/ox801d_main_japan.htm

Older alloy Campy Record cranks are pretty light but finding a compact might be impossible (don't think they ever made one). They would look perfect on an older frame though: http://cgi.ebay.com/NOS-Campagnolo-R...item48401dc3bb