na..oceanic is superior to RC. it costs the same here. more calcium, cleaner product( i used to get a nasty brown residue floating on top, and if you opened a can of each and sat them next to each other, you can see a visible difference in the color, and RC seems to have some strange particles here and there as well. you also get more in the can for the same money(here at least)
i switched from rc to oceanic, and have noticed a difference in the mixing barrel, and the display.