Peter,

I almost pushed those Etymotics (the E6i) through my skull trying to get a decent fit and some audible bass. I agree with you that they have excellent isolation, as did the Shures, but it was the Shures that delivered smooth, extended sound in my ear canals.

I think that fit and comfort and sound quality are so crucial with these earbud designs that I'd suggest anyone considering them only try them with a 30-day refundable guarantee.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)