#2 - seriously? The X12 has been singled out repeatedly in this thread as one of the rare TWEs with no isolation due to its earbud design. The SQ is very pleasant with a balanced response across the spectrum. They might lack a bit of transparency but for mobile use that's fine. I wanted them quickly before a trip so I got them on Amazon under the Lezii name. I'd spotted them on AE for around 40$ in December.