im trying to decide between two boards - the HL Murray and Premier. I've been on both of the 04 models, but I couldn't tell if the Premier felt more stable due to the fact that it was a 141 as opposed to the 138 Murray. How big a difference does length make? What about DNA/Biolite? I've read DNA is about a pound lighter, but unnoticable to beginners/intermediates. I'm about a beg/intermeciate.