All things considered-versatility, ease of use, and stealth-the Extreme would be the best choice for your particular setup IMO. Doesn't hit like the SSV in whip mode (lower vapor to air ratio), but better than the herbalAire. It's by far the best for leaving out all the time as an aromatherapy diffuser. I've used all the vapes you mention except the Vapormatic, and I'd avoid that one for the sorry 90 day warranty if nothing else.