I use silicone rubber plugs that I get at Home Depot- they have these in their Safety aisle near the hand tool area. They';re orange and have a blue string to keep them together, but I remove the string. They're much more comfortable than the HearOs I bought and on occasion, I have slept with them in.
If for no other reason, they're a great way to get rid of ear wax because of the trapped heat- get ready for some of that when you remove them.