Unless you cast your own bullets loading BP is not cheap, quality bullets can be ordered ranging from $30 to $50 for 50. Powder goes quick too with the large charges, 1 lb (7000gr) can only provides 70, 100gr charges...
I recommend C. Sharps over Shiloh for two reasons: barrel quality and delivery time.
Otherwise I do not see any difference between the two companies if comparing apples to apples...
MVP