I got my Arrowhead 1-8x24 mounted last night and sighted in today.
I have to say the BDC reticle was pretty much dialed in for a 50/200 zero right out of the box. I only had to drop elevation by about 1 MOA to get it dead on. I walked off the 50 yards, so that may even account for it, but I was impressed that it was so close from the jump.
I did a box test, moving it 7 inches up, right, down, left and it hit right where I was expecting it to. There were no issues returning to zero.
Initial impressions on it were excellent. Only minor disappointment is that the reticle is certainly not daylight bright. It was plenty bright from off the bench, but even at max brightness in pretty overcast conditions it looked only moderately illuminated when I was running up drills.