I didn't notice much of a learning curve with spiral blades, but they are the blades I started with. I have a heck of a time using flat blades. I use the FD new 3/0 spiral for all fretwork, stack cutting 3 pieces of 1/4" plywood and hardwood up to 3/8". For larger hardwood I will use a flat blade. Give them both a try and see what you like best. Welcome to the Village.