I've got a few M18 tools, 1/2" drill, 1/4" impact, and 3/8" impact. I've got 2 of the 1.5 Ah batteries that came with my drill.
I just came across a really good deal on a bare tool Fuel Sawzaw. I've wanted one for a while, but I'm wondering if it's going be worthwhile running it on the 1.5 Ah...