Could not recommend the Marpac Dohm more. It uses actual air to create white noise for a much more realistic sound that blocks out more. I have two and you can adjust the pitch by opening or closing some openings. It’s great!

This is mine and I LOVE IT. Total game changer

This is the one to get.

It’s so good. It’s mechanical so it makes “real” background noise and not just some recording. You can kind of shape the sound by turning the top or side to match whatever noise you are trying to block.

It’s also the kind like every therapist in the world has outside their office.

I've suffered with chronic insomnia for years, and have tried just about everything under the moon. I just quit the benzos I've been on for years for sleep (triazolam), they were working decently but I don't need them anymore. The topamax I'm taking for migraines and nerve pain is doing a good enough job now. Story out of the way.

Might I suggest investing in a simple fan based white noise machine and some cheap foam ear plugs (just grab a cheap pack from the closest drug store)? Between the two you'll not hear most background noise, but you should still be able to hear important loud noises. I sleep through just about everything now. It is one less distraction.

The Yogasleep Dohm works well for us: https://www.amazon.com/Marpac-Classic-White-Noise-Machine/dp/B00HD0ELFK

I use this one, love it. I spend a lot of time in hotels. I think sound-wise you couldn't tell the difference from your mac playing white noise though.

https://www.amazon.com/Marpac-Classic-White-Noise-Machine/dp/B00HD0ELFK