Hello there,
i would 100% choose for the pouch and shard (as far as destruction goes at least, don't have much knowledge on affliction).
you biggest source of damage as destruction comes from aligning trinket proc's with cooldowns and dumping embers on chaos bolts, you will get SO much more with the pouch and the shard, not only from the proc and use effect, but the raw intellect on shard+pouch is higher aswell.
hope this helps!
Shades