I would pick the SoD LE over the S6 if I could only keep one. A larger knife can function as a smaller knife in a pinch but not the other way around. A 7" blade is really the minimum to be an effective chopper so the SoD is more functional for just a bit more weight.

That being said, I would try really hard to keep both. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />