Actually, the Scubapro Classic isn't really the "classic." Scubapro is an excellent company, but they do tend to try to confuse us with names and sizes. The old style "classic" BC Dennis uses is now sold as the Sport. The Classic has more bells & whistles. It comes with a cummerbund and comfort padding along the spine. These features make it very comfortable, but they eliminate one of the biggest advantages of the "classic." The Classic is not streamlined. Fortunately, this advantage is still available using the Sport. If you never dive in moderate or strong current, this may not be a consideration. It is a major consideration for me. We had a moderate current today off Pompano, I was glad not to have the bells & whistles. The other major change between the Classic and the "classic" is the new Classic is weight integrated. Lots of folks love weight integrated, I dislike it for many reasons.