Ok, been saving a while and now have some extra gold to spend. I have maxed out all my gear for my end game sorcerer except I'm still using a mythic ring, and I have Samael as my pet. What would be my best option?

1) Get an arcane shard/ring?

2) Get a fossil/nekro?

3) save my gold for after the expansion?

It would be helpful if the players answering this had both a ring and nekro, that way they could advise which they think is more important.