I've had a pair of David Clark 10-20's for about 15 years. Tough, strong, dependable and reliable. They are field repairable and that is a very useful feature. Not that I have had to do so of course. I have dropped them, kicked them and generally given a pretty solid going over in the hot climate in northern Australia. I wouldn't trust any thing else. My hearing is essential to my job.
For even more noise protection in some of the noisier aircraft, I just simply used either half or a whole ear plug. No batteries to fiddle with or something else to fail.
Replace the original ear pieces with gel seals and use a cloth cover too.
They are popular for a very very good reason. They work.