Only you can decide that. There's definitely a difference between the two, especially when you're downsizing 4-6cm. It just depends on what you're looking to do with it.
If you're just looking for something to play around on and still intend on your SL being your primary board, maybe look outside of NS at something cheaper.
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz