I-80 would most likely throw a pretty marketable calf out of her if she truly is thick and massive like the picture shows her as. Otherwise i don't think you could go wrong with most any CE angus bull, but in my opinion I-80 would give you a more functional calf while sacrificing a little on the BW. I haven't yet bred an animal I own but soon will be, but I retain all of my knowledge from the people in my county and I frequently make stops at some reputable farms and see what sires are and aren't working and on what type of cows, just if you were wondering where this opinion was coming from.