no fatigue

Hi, I'm looking for a good, isolating, non fatiguing iem under 200. After some research I've came down to the Etymotic er2xr, er3xr, and the er4xr. I plan on using these during study sessions in my school library and stationary listening. These will be plugged into my phone (iphone 11) for...

I am looking for a good pair of wired in-ear headphones which will be in my low £50 budget. My preferences are: -Plenty of bass (more than average of both mid and subbass but not so much everything else is gone). -Recessed mids (I don't like it when the vocals sound shouty and "aggressive")...