Buy the Soundcore Q20i Headphones.

It's the only one of the three built to actually cancel noise, not just play music louder than it.

What was compared

1. Cuts noise the JBL can't touch
The Q20i runs hybrid ANC with a transparency mode, the JBL Tune 510BT has no noise cancelling at all. If you commute, fly, or work near chatter, that's the headphone doing a job the JBL simply can't do.
2. Richer audio you can actually shape
Q20i supports LDAC Hi-Res streaming plus a custom EQ in the Soundcore app, the JBL Tune 510BT is locked to one fixed Pure Bass tuning. Anyone who listens past background noise will hear the gap in vocal clarity and detail.
3. The iClever is built for toddlers, not you
It's a wired headphone with volume capped at 85dB to protect a child's ears on a tablet, not an adult listening setup. If you're buying for a 4-year-old's iPad time, that's exactly right, but it's not who's choosing between ANC headphones.
4. Stays paired while you jump devices
The Q20i's dual connection keeps it linked to two devices at once, so a call on your phone cuts straight into audio from your laptop. The JBL Tune 510BT holds one connection, meaning a manual re-pair every switch.
5. Yes it's $30 more, and that's the right call
The JBL Tune 510BT is cheaper and some reviews flag the Q20i's hinges wearing after heavy daily use. But you're paying for ANC and Hi-Res audio the JBL never offers at any price, and that's what gets used every single day.