I have the Hensoldt 3-12x56 FFP and 4-16x56 NH1 and love them both. I use the 4-16 on my competition rifle, a 260 TRG. The 3-12 is on a Sako 308 TRG with 20" barrel that is a combo hunter/ tactical rig and is perfect for that setup and range. The reticle is the perfect thickness for hunting. It is a little thick if you are just shooting at dimes all day. But I shot it at the Mammoth Sniper Challenge last year and did not have any misses because I couldn't see the target (and some were quite small). I like the simple mil-dot reticle in this application for hunting moving animals, the light gathering is very impressive, lit reticle is nice if needed (dark background), and the eye box/image are amazing. There is no fiddling with your head to get the view, it just is there, even when quickly bringing the rifle up into position. This scope is very good even at 3 power, minimal tunneling that is gone by 3.5-4 power. I have had no problems with either scope.
I have not used a Kahles. Try to look through and handle both if you can before purchase.
TKAB