I've just replaced the default earphones for an MP3 player (the old ones' cable got damaged, meaning an intermittent left-channel).
The original ones were solid in-ear types and probably weren't too good at the lower frequencies, but that was OK with me because I mostly listen to recorded speech radio through them. They also let through external sounds, but I liked to be able to have conversations without removing them, and drive the car with them in retaining decent all-round listening awareness.
These new ones are 'ear bud' types, soft rubber, blocking out an awful lot of the outside noise as if (barring their own sounds) I was wearing earplugs, and everything they pronounce directly into my ears is far heavier in the low pitches than I prefer. Ironically, therefore, the 'better' design points are worse for me.
I was also hoping to have an angled plug (one of the reason the original cable was damaged was the way the straight-out plug put the cable into harms way as soon as it left the rubber 'boot' and flexi-sleeve of the cable), but when I was choosing these new earphones from among a rack,
every single one of them proudly displayed the earphones end of the cable but had the plug-end secreted within the non-transparent part of the packaging (upon which was generally emblazoned "gold contacts!" or some similarly prideful boast about the hidden plug's composition), and so I've ended up with another set that can potentially suffer the same damage (after a few months).
I know this doesn't help the OP (who I reckon is looking for an over-ear variety, anyway), but just thought this was a relevant note of caution for anyone in my sort of position. Or the opposite one, of actually
wanting "killer bass[1] and good isolation" and yet getting something that
I would have actually preferred to have.
Oh, and I've been listening through these (non-optimal) ones continuously for the last nine hours, at least (although I did remove the RHS one, temporarily, when I had to talk to a shop-assistant, while I left the other in and the player playing). I do find these rubber bud-types less comfortable than the harder in-ear cases from previously, but don't notice too many lug-hole problems. No, I don't know what make they are. I got them for about £3. (Hmm, what's that... About US$4.5 or €3.5, at current exchange rates, or, if you prefer, approx 2.3 litres (0.6 US/0.5 Imperial gallons) of fuel at the price I filled up at, today. Yeah, cheap ones. Another reason I think it's an over-ear version that's being looked for.)
[1] No relation to killer carp.