RonCritchfield
Hey 👋
Apologies in getting back to you late.
Out of these, the Ear are the best performing, and are newer than Ear (1) and (2). Ear (a) is a solid, affordable option, but doesnt quite beat out the Ear in terms of sound quality. Throwing Open into the mix is a hard comparison as they are a different form factor and meet different needs, they do however have great balanced sound. As Open does not have ANC and are open form factor, they might not be the best experience on busy transport.