Well first of all, thanks for all the responses! It seems I've picked two great knives. On the other hand, that makes it harder to pick between them.
Here's what I'm thinking about them:
I have no problem with lockbacks, it seems like a stronger lock and in most situations, opening the knife with one hand is the important part and closing it can be done after you've finished your work, when you have both hands free. Then again, sometimes it might be useful to be able to close it one handed, and you guys say it has a strong liner lock.
The blade tip on the Endura may be a little stronger, but like Brad "the butcher" said, I do have an ESEE-4 for the really tough stuff. Although, this knife is going to be my main knife for daily use and as a backup to the ESEE-4 in the woods (though I doubt I'll break the ESEE-4 I could lose it somehow), so the extra strength (if there is any) could prove useful.
The extra length of the Military might be good in some way. Or maybe the Endura, being smaller could be more easily carried, but really I think the two are similarly sized and the difference would probably be unnoticeable in actual use, at least for me. Again with the weight, it's such a small difference that unless I held them both at the same time, I don't think I'd notice the difference.
The VG-10 and S30V steels, although I don't know much about them, don't worry me either way. I'm not really a steel snob and if they both hold an edge for a decent amount of time and both have decent rust resistance (they do right?) then either one would be fine.
The pocket clip positions don't bother me either way. As my first knife with a pocket clip, I'd imagine I'd get used to it whichever way it was positioned to begin with.
As for the people who say the Military is a better slicer, why is that? Both the Endura 4 G-10 and the Military have flat ground blades but the Military has a thicker blade. I would think the Endura would be a better slicer, but I could be wrong. Or are you comparing the Military to the sabre ground Endura? That would make sense.
So I think I'm leaning towards the Endura. The dealer that I'm buying from has it for $30 less than the Military as well. I didn't want to buy a lesser knife just because of a $30 difference but it sounds like they're both solid knives and the Endura would probably suit my needs a little better.
I just have a couple more questions.
Is the VG-10 a stainless steel? Or is it just fairly rust resistant? Or neither?
How hard are these steels to sharpen and do you need a diamond stone to sharpen them?
Oh and of course, what the heck is a spydie drop?
Thanks for your help so far and sorry about the really long post.