It really does make a difference. It makes 3cm difference actually. Its not so much the 3 cm difference but its the waist measurement difference. It will make the 155 that much more playful and that much poppier in and out of turns. The 155 better suits me because I have an 8 size boot and its just way too small for the 158.
If you know anyone that has a 155 NS ANYTHING board, let me know
I chase powder for a living. As long as I can get that tingly sensation and some white stuff in my face every day, I will be perfectly content with life.