This is an incredible tool, I love it. Very powerful, very smooth. I thought about getting the 15amp, but it really could not be better for what I'm using it for. I don't think I would use the oscillating feature much anyway. So far I've used it almost exclusively to cut nails in between lumber, such as removing hardwood flooring without damaging it. You definitely want the 3/4" stroke model for this, or any fine, tight space work. The 1-1/8" stroke is probably better for fast cutting in a lot of wood, although this one will still go through a 4x6 in a matter of seconds. In a throw away consumer world, it's nice to find something that really is built like it used to be and will likely last you a lifetime.