I found this very exhaustive comparison between the Spydie Delica in ZDP and VG10. It was a very interesting read, and I thought some people here might enjoy it.
http://www.physics.mun.ca/~sstamp/knives/delica_zdp_189.html
http://www.physics.mun.ca/~sstamp/knives/delica_zdp_189.html