I just got my 1st set of LC Pads. I bought a variety of the 5.5" flat pads on the recommendation of just about everyone I asked on the AG forum, including Master Yoda Mike Phillips. They tell me they are the best pads for a newbie to use on his DA. Mine will be paired with my Griot's Garage 6" DA. I purchased several orange, white, black, and blue. Once I learn on those I would love to try these new pads out. I think for me I'd try the 4" for the tighter spots and curves on my cars. Thanks, Spiney-Dave