A major difference between Crosby and Santaluz (and you should do your own analysis)is average pricing. Both communities have expensive custom homes ($4M+) – but mean prices are lower in Santaluz. Even with a depressed housing market, prices in Crosby start at $1.3M and up. The products are different too. The homes Davidson built in Crosby are very different and bigger than Santaluz. Almost semi-custom like.
There are some pretty basic Del Sur style homes is SL. You won’t find that kind of product in the Crosby.