If you're looking for flagship performance at a reasonable price and you like full bodied, smooth signature with strong bass foundations, impressive resolution and treble refinement then you'd miss out not adding the Volt to your list. Make sure you have a proper source though to provide enough current to bring the best out of it. And if you have a bigger budget, Totem is a fantastic pairing that brings a more punchy, energetic, focused presentation as well as elite performance that matches much pricier flagships.
The Orb is up there with the best in the segment namely ISN H40 and Dunu DK-2001 which is no small feat. If you're looking for an IEM with of the very best bass, a full yet clear articulate midrange and refined treble then it's hard not to recommend the Orb as one of the very best value for money on the market. A no brainer in my opinion!