I'm curious about what people think about the relative usefulness of the Ranger RD-9 and RD-7.  I can imagine that the RD-7 can actually do some respectable chopping, but could also be easier to control for smaller, more-usual cutting tasks.  I know that for serious chopping the RD-9 would be far and away the better, but if what I'm after is something big-knife-like that would fill the 85%-cutting, 15%-chopping niche, would the RD-7 be the best bet?  Or am I basically getting such an unwieldy, big knife either way that an RD-7 would be a dumb compromise, and the only way to go is to get a massive RD-9 and pair it with a Mora or such like for the little stuff?  
Or, to put it another way, how useful is the RD-7 for general-purpose outdoor survival work?