Iv'e hunted and shot 3D with one of Csaba Grozer's early Avars for a couple of years. Had nothing but good luck with it.
Just recently got an even shorter more radical bow from Spitfire Archery. plan on hunting the last couple of weeks of the season with it.
I shoot them split finger and with a thumb ring. I like the thumb ring better for 3D than hunting
as it takes me a little more time to get set up.
Check out these 2 sites.
http://www.grozerarchery.com
www.spitfirearchery.com
Of the ones you have pictured only the Scythian really comes close.