RUPES HLR 21 6" Random Orbital PolisherThe next generation of the Rupes 6" Polisher is finally here. Now with battery power, the HLR 21 is lightweight and powerful. When I tested this at SEMA, I was really impressed. With the LHR 21, I found the cord annoying and the polisher on the weaker side. It was also loud. With the LHR 21, it could sometimes sound like the gears were grinding and making a lot of noise. The new HLR 21 is much smoother and quieter. I will need to test this polisher