Opinions on flush

I have a Reg. Angus Donor due to come in heat tommorrow morning. She has worked with everything she has been bred to. I am thinking of flushing her to Dr. Who and Thriller or should I Flush her to an Angus bull that she has had proven progeny.. She is an Oscar 711  and adds style and power. My goal is to get defect free females that I can breed to carriers.

Split the flush.  Should be easy enough to tell the straight Angus calves apart from the crosses.  I'd think about Strictly Business or Irish Whiskey or one of his clean sons, again if your guy already had the semen.  I never got much out of Dr Who personally.  Or you might go WMW himself

picture of the cow?... link to pedigree by chance as well?? 

She is the mother to the heifer in my avatar. I have never pictured her and she is 11 years old so she is not in the prime of her phenotypic life. I will have to look for her reg. #.