I have tried a lot of different kinds trying to find a balance of comfort, decent quality, ease of use, etc. It is a difficult thing to find something really good.
One thing I have experienced with the muff style is many of them get in the way of shooting and sometimes you might not notice, but might end up breaking the seal on them when you push your cheek onto the cheek rest.
With expensive custom ones, I have read a lot of complaints about their seal breaking with the right side when the cheek is pushed on the cheek rest too. Although I have not experienced this, or maybe just didn't notice.
I found axil brand in ear electronic protection to be very uncomfortable and the sound quality was mediocre to poor on 3 different models I tried. All of them felt very uncomfortable to me.
Walkers silencer (fairly small and take hearing aid battery), were very good comfort wise, best I have tried. Decent on audio quality. But the tiny battery that dies quickly and continuously even when the item is off, gets annoying.
Walkers silencer 2.0 BT, with an internal lithium battery are decent comfort wise, internal battery is convenient, and the sound quality is pretty good. So this is where I have settled for now. But it's not perfect. I would still be open to switching to something better if I found it. But of many hearing protection items it's the best compromise I've found so far.
I keep meaning to order the 3M electronic in ear ones to give them a shot because I have heard good things about them.
Another big struggle with them all, is getting them in at the right moment. Again, most aren't comfortable enough to wear for 8-15 hours a day and can make the inside of your ear sore. And it can be difficult in the heat of the moment to get them out and put them in. Sometimes you also can't move around that much like with whitetail or some other animal you might be close in on.