I've also had a number of open pros crack. They have put me off all Mavic products.

Kinlins seem to work pretty well. You can get them, and Sapim spokes, for reasonable prices from BikeHubStore.

Use heavier spokes on the DS (i.e. Sapim race) and lighter ones on the NDS (Sapim laser). You can also consider lacing the DS 1x heads in for a better bracing angle.