I've own a 2010 SL from NS and a 2011 T.Rice and 2011 Jamie Lynn. The T.Rice and SL are very different beasts so I won't go into that. The SL(161) and Jamie(160) are somewhat comparable, with the Jamie being a bit stiffer. The rocker is definitely more pronounced on NS boards. I found the SL to be playful to the point where it was too squirly for me and now sits on the *shelf. I mounted up the SL last weekend to ride for the first time since purchasing my Libs to give it another shot, but I still prefer the Libs. I don't know if is the design of the RC Tech vs C2 or the other differences in the boards, but I just felt much more confident on C2. I'm of the different opinion than Leo, I found the Libs to be better carving boards. But I haven't been on a NS board designed for carving like the Haritage, Premier, etc.
*DISCLAIMER: I bought the wrong board. For how I like to ride I should have gone with the Heritage or the Premier. The SL is a great board, just doesn't suit me.