Question About Power Tools
 

So, I'm looking at a cordless impact driver (Makita 6932FDWDE.) I like that its very light, and has great torque. Has anyone used an impact driver? How do they compare to standard cordless drills?

Also, I don't need to use it as a basic screwdriver. I have a DeWalt DW920K-2 for that. I'm going to use a drill for installing plasma panels and projectors, while hanging off of a ladder.