To me, Rage lays down and sands better than Rage Gold. My autobody supply store wont even stock the Extreme because no one around my area will use it. I like the 3M Finishing Putty with red hardner for pinholes as well.
At our shop we use rage evercoat as a primary filler, and dolphin glaze as a lightweight. I love the evercoat over anything ive tried, and the dolphin glaze is amazing (self leveling, and very easy to sand).