I had been hearing bad things about NP birthweights and good things about the calves so I comprimised last year and only used 5 units, luckily I got 5 calves and am pleased to say I did not have a calf over 92 lbs, with the smallest coming at 84. Unfortunately I got all reds....2 of the cows I used him on were black and they decided to toss the red gene also. At first I was pretty disapointed in the calves but with each passing day they are outperforming and outshining most of the other calves by duramax, golden child, paddy and hairy bear. Has anyone else used him with similar results? <cowboy>