Hmmm, Koukol--I'm not sure what you mean when you say your ear canals are too narrow to get a good seal for IEMs. Don't the removable tips that most non-custom IEMs use come in different sizes?
I've used Etymotic ER-4Ps for about 12 years, and for the last two years or so have used Comply tips that come in various sizes, so you might try those. They're very soft and pliable foam.
I find that there are some uses for which the IEMs are just indispensable, like flying, but I also like them for use in bed at night if my wife, who's a very light sleeper, is asleep and I don't want to disturb her, but I can't sleep and want to listen to music but don't want to go downstairs.