I have no experience with a Ritter, but my ZT 200 is a totally bombproof folder. But, it IS rather bulky and heavy.
I do prefer my Military over my ZT as it's light, perfectly balanced and thin, yet largely sturdy enough. I don't have any issue with the tip. It has a strong blade that is designed purely as a cutting tool, not a prying tool. It's hard to improve upon the Military in my opinion.
I can't give feedback about the Paramilitary as I don't have it. It's probably very good as most high end spydies are. I always thought that the blade looked a bit short compared to the handle, and that's of course a purely subjective unworthy reason!
Since you seem to like sturdy survival kind of folders, here's an interesting alternative.
A very sturdy knife that is even more impressive in the hand than my ZT, and not too expensive: the Pohl Force Alpha Two, which is a slightly updated version of the recently discontinued Alpha One. Really, a beast. I do prefer to carry my Millie for the same reasons as above, but if you like the perception of nuclear-war-proof knives, well then you'll love this one.
Here's the manufacturer's (german) webpage and
here is the review of the nearly identical Alpha One in "Tactical Knives" magazine. Finally, I don't want to push my little clips too much but if you'd like to see how it is in the hand and so on, then you may want to see
my review video about it. Worth Investigating.