Voidweaver

Whalewame

<Calm Before the Storm>

(EU) Argent Dawn

Night Elf Shadow Priest

Voidweaver

BiS is only BiS in the context of fully equipped BiS. Sim yourself, set sim conditions properly, and remember that the margin of error is typically within 0.5%.

Also, SIMC plays your character perfectly. Unless you do too sims will not necessarily be correct. Learning to play your character is a better way to improve your damage for 99% of players.