That's pretty much it in a nutshell. If you want fast movement and the load has some weight and/or resistance to it, pneumatic is the choice hands down.I looked into this for my Zombie fence shaker and concluded that if you want to move something heavy and move it fast, pneumatics are the way to go. I resisted becasue everything else I have is electronic, but kept coming back to pneumatics. I have my compressor set up around the side of the house (with haunt in the front) and a 50 foot hose. You can' even hear it. YMMV.