Contender barrels
Based on TC Forum info I'd say the Bulberry barrels shoot better but to me there is a substantial difference in price and my Custom Shop barrels shoot pretty good.
I have a .221 Fireball barrel for my Contender rifle and a .260 Rem. barrel for my Encore Rifle. Both are minute-of-angle shooters and might do better with proper load work-up.
I just used bullets and powder that was handy and threw together loads from the Hornady book. Seated bullets just off the lands and about 1 grain under max and went to the range.