I got a new NS Design CRM5 for Xmas (oops--for the holidays) and followed the usual advice to replace the stock NS Design (D'Addario made) strings with Helicore Hybrids. I did and, for me at least (and for Francois too I gather), they sucked.

So, be sure you don't like the stock strings, or do take some of the other advice given on the TB Forum before spending your money.
Ed (daHammer) White