I would to go for the Adams but I'm a suspect. Their sound kinda combines electrostatic and ribbon, extremely detailed and not harsh, vocals really stand out. The A5X have a more neutral sound while the A3X can hype a bit on the bass.
The airmotiv looks good while I didn't hear them they seem to use a similar tweeter technology.
If you think it helps Audiostream has reviews of both speakers I believe.