I did a head to head kirkland barton bib vs the kirkland barton sib (120 proof). The first thing you notice is the sib is a few shades darker (more red). Bib Nose : astringent , citrus and carmel. Taste: tangy sweet light pineapple, citrus a little cereal. Medium numb spicy finish. This is nothing to laugh at for less than $25 a liter. 3.75 Sib Nose : more rich and smooth with a citrus carmel as well. Taste: wow this shows up the bib. Almost twice as good. Smooth carmel, citrus, cherry, rich and deep. For only $5 more??? ($29)  Finish is sweet, smooth with a little spice. 4.25 but I really want to rank it higher for the value.