They are both good knives, but the Ka-Bar is made of 1095 cro-van carbon steel, and the SOG is made of AUS 8 stainless. Since you stated you wanted a "chopper" and "pryer", I would recommend the Ka-Bar. The 1095 should stand up to a little more abuse than the AUS 8. Carbon tool steels usually can handle more abuse than stainless steels.
I do not own any SOG fixed blades (I do enjoy the SOG Spec-Elite II folder I have), but I have a Ka-Bar KBD1 (which is most likely ground too thin to meet your requirments for toughness) and a Short Ka-Bar Fighting/Utility Knife. I like both of them very much, and I feel they are a good value for what they cost.
You should also be able to get the Ka-Bar a bit cheaper than the SOG.
I noticed that both the knives you mentioned have partial serrations, so I guess you want that feature, but from my experience, serrations make a big knife a weaker chopper and pryer because the serrations create easy breaking zones for stress on the blade to snap it. If you plan to do a lot of chopping, prying, or batoning you might want to consider going with a straight edge.
You might want to take a look at the Becker Knives that Ka-Bar is producing now because they have thicker blades of 1095 and tougher full tang handles as opposed to the (most likely) weaker, slimmer tang of the Fighter model.
I own an original Camilus made Becker Crewman, and if Ethan Becker is still making knives to his standards with Ka-Bar (and I'm pretty sure he is), then a Ka-Bar made Becker would fit your needs well.