I love my am2 ted,and I'm with lacey as i like a strong fin. They are a more drawn out fin than the upright ones,not in a bad way as i like what they do.
In a quad for.that more slippery feeling and the ability to.turn in small places/adjustments, I like the upright fin.
There a couple of.shredders up.here who have been on the nano,they too are like lacey as the prefer the three fin setup. I don't get how it works with such a wide tail...but i have not surfed a nano,and the crew up here kill em