
I've got the NDS, they are excellent, don't let the high trajectory put you off. You'll love 'em.
I'm currently using the sand wedge out of my old set, but am looking for a suitable 56 degree sand wedge, (look at e-bay thats what the NDS sand wedge is). I've seen several, just haven't plummetted for one yet, more because I'm into getting everything custom fit at the moment.
2 sensibly priced 'off the shelf' which stand out are the Progen, and MD Golf wedges.