I purchased a Makita Cordless Random Orbit Sander close to a year ago, and it has become one of my go-to tools. I won't go into the design specifics (that's Makita's domain) but it essentially follows a complex orbit and rotates at the same time.
I've gone battery because portability and some strange locations make battery easier, and so long as you're kitted with one supplier at 18 volts it makes sense as you can swap batteries when required. I find battery life is more than adequate using 5.0 AHr or 6.0 AHr batteries though if you were going ...Read more