I THINK THE SOLOS ARE AMAZING. there's definitely more variation. the K8 disc 1 was mostly "band" material, but there's more style changes in disc 2.
DUDE, WTF WAS THE INTRO TO MARUYAMA'S SOLO. LOL I LOVE IT. it's like...a jungle. like literally.
but my favorite is Ohkura's "no-no-no".