I'm a big FD fan, the only blades I use now. I really think the spirals are worth giving a try to also. A FD New Spiral 3/0 is my main blade now.
You can email Mike and he will probably send you a couple to try for free. Or give him a call. Tell him about your saw, what type of cutting you want to do and he will recommend what to try. He also has a nice assorted pack you can purchase and try out several types of blades. Do I sound like a Mike fan, well I am, he sell a great produce, gives great service and from the dealings I have had with him and the phone conversations I think he is a great person.