Ok here goes. Having black angus cows to cross the bull with my first choice would be LeGrand 80P. It appears to be a longer made bull then KCFM326. Myself I prefer a herford angus cross to a char angus cross. I do think that the char angus will sometimes outweigh the others. Looking to add heifers to the herd I would use the LeGrand bull. However, if looking for pure profit and weight I'd use Lead On. In my opinion using the Murildale Bull will cut into profits due to the buyers leaning toward uniformity in color of hides. Roan cattle might be fun to look at but the odd colored ones are the ones they cut out sale day.
Just my opinion.