Which of these 2 headphones are better?

[okoice]

Sony MDR-EX155AP or JBL T290?

My last mobile headphones cable got broken so thats why im asking because i plan to buy new ones. I want them to have good bass and good sound isolation so others wont hear what im listening to and be comfortable when i wear them for a couple of hours.

 

[True Buie]

Heyo okoice

I haven't tried either of those IEM's, however I'd probably trust Sony more than JBL. I have nothing against JBL, however I've had better experience with Sony products.
If I had to buy IEM's myself though, I'd probably look at some KZ zs5's or zs6's. These are amazing IEM's at their price point. I've owned both and love 'em. The zs5's had its issues which got fixed with the zs6's.

KZ zs5
https/www.amazon.com/Headphones-KZ-ZS5-Microphone-Detachable/dp/B072BZSQ28/ref=sr_1_1?ie=UTF8&qid=1523856849&sr=8-1&keywords=zs5

KZ zs6
https/www.amazon.com/Headphones-KZ-Fidelity-Microphone-Detachable/dp/B076RL31QK/ref=sr_1_1?s=wireless&ie=UTF8&qid=1523856871&sr=1-1&keywords=zs6

Cheers