I tried the sour version on tap at Shotwell’s - not sure if it’s barrel #9. A definite improvement over the normal version but it still seemed a bit muddled. More berry flavor, and it’s nice and jammy, unlike the normal. Pretty good sour notes. Less citrus. Some good musty aroma. Still a bit too much tannic neutral oak flavor. Appearance is a cloudy strawberry color with no head. Good stuff.