IMO you can't go wrong with a 14' Naish Glide.. Old shape or new shape.. Carbon or AST.. The brand new AST 14' Glide is a bargain price and will probably be my next board.
Also concider the 14' WOW (walk on water) board with the planing hull shape.. also the 14' Starboard Coast Runner/Open Ocean or even Surf Race.
SIC boards are proven to work well but are expensive and hard to get.. One other board worth checking out is the new Coreban Dart.. I think there's a new 14' PSH board due soon that should be good.
I recommend a surfing/planing hull design unless your main goal is to get from point A to point B as fast as possable.. (then flat water race boards work well) But IMO that's not what DW'ing is all about.
Maybe you've seen my latest DW vid.. Here's a new shorter version .. Tried to make a new DW vid yesterday (in absolute awesome conditions) but I found GoPro's don't record for very long with a flat battery..

DJ