I really love the IEM from Etymotic Research:

https://www.etymotic.com/consumer/earphones.html

I've been using them for over ten years and only had to replace a pair once. I use the mc5's which are there lower tier option.

If you have ear comfort issues you can also get custom made ear molds.

They really block out so much sound it's amazing. I prefer IEM's to headphones because of the weight and heat from headphones (my ears get hot when covered).