Anniversary Dilemma

The ŹOOĻ anniversary is nearing its end. I've been steadily grinding the score attack, but I'm always wondering whether to put · Gold Special Boost (Score Up) · Silver Special Boost (Shrink) in the friend slot. This time, with Anniversary 2026 Yuu and APOŹ Yuu available, I'm not sure which one would be better... It's a shame that items are limited and I can't train all the cards. The worries never end 💦