Hi Bobby... I have a few "favorites". Over all, I like the Karp design, though his maker and heat-treater have been less than great sometimes. The over-all shape seems to be just about optimum for versitility. I can throw his knives with more different grips than any others.
In a production thrower, it used to be the large Blackjacks, but they went out of business, and now there is a great production thrower out there in the "American Throwing Knives" "Long Distance" version (used to be "Dragon Knives"), which are more versitile than the other version he now appears to focus on. The "LD" knives can be thrown easily by handle or blade, but not the other version.
Of your knives, my favorite are still the "Lew Botherton" (I think that was the name) style which, for me, throw very easily, though the handles have been cracked and re-taped a million times. This seems to be a very natural style for a thrower and I've seen the basic shape in many variations, but I still like yours best.