Leo can't tell you to buy either board. It is a personal choice based on how you ride and the conditions you ride in.
If you want a quiver killer and like to bomb then the hd.
If you are athletic and want to do more park then the ct.
If you ride lots of pow then get the ct.
If you ride the ice coast then get the hd.
Another option, NS Proto has a high resale value. You could buy the ct try it and if you wanted something stiffer buy the hd. Note the cost of demo rental to help justify the purchasing the ct. Just keep the Proto in mint sellable condition, don't bust the edge, topsheet or gouge the base.
Hope this helps - Nito
Thanks! I was really asking him what his personal opinion would be but it looks like I'll be saving some money and getting the Proto CT.