Is there any way to get all three Aetherial items? the crown, shield and staff

im a bit greedy

if not, then which one would you kind folk say is the best one to choose?

thanks in advance

Yes, 3 play throughs.

if you are on the PC, you can use Console Commands to add them...

otherwise you can only get one...

I go for the Aetherial Crown, as it is the most useful IMHO

Although I've never used it before, I'm going to say the crown as well. And that's only because of my recent discovery/love for the Ritual Stone.

As the crown gives the ability to have 2 Standing Stone blessings (ie Ritual and mage), I'd say it's best.

Unless you're on PC, you can only get one.

The Crown is the best option IMO.