I actually love RULE's instrumentals. Unlike T2M, it didn't really have the "epic" feeling with the strings and such, and it could be my low-quality version, but it did have the "rock-band" feeling, which I like. It has heavy instrumentals, but they're not "epic" heavy like T2M and Decision were.
I think it is more I guess..."mainstream American rock" feeling?
But I don't think there's an Ayumi rock song that I didn't like...so...