I have sailed the 2012 137 and it is bullisticly awsome. The bottom end grunt was there and top end speed i never pushed.It Smashed the river chop and made you hang on in the flat water.I was very surprised when i had a higher peak on it than my 2012 manta in the same conditions. I sail the manta nearly every day and the mistral for the first time . If i was in a better position i would trade my manta in for one any day !!!! Its really nice board for the with a large breeze scale. It has a good lock and load feal about it which i really like about it .