Thanks for the suggestions.
I used to like long boards but maybe old age, maybe the 151 X8 performs so well, I am thinking about going shorter all the time....
I suppose the 153 will be more fun than 155 but I think the 155 should do better at speed. Less chatter I hope. I had a 154 Custom before, loved the edge to edge, felt like the base was rounded! But the chatter on the straights was unbearable!
Online I found some 155 in the States, maybe this is the way to go?