For a long time now, I have used either a pair of molded ear plugs or ear muffs for shooting pistol. For rifle, I've been using both, but the muffs are frequently pressing against the stock and are largely a PITA. I could probably get by with just the ear plugs but at my range we have to shoot from an area enclosed on three sides (to trap the noise) and it can work too well some days.
What I am looking for is the most effective ear plugs I can get. I won't say that money is no object but I'd be willing to pay more than the usual $10 a pair.
It's worth noting that I have rather narrow ear canals and find that a lot of the ear plugs sold start to get really uncomfortable after about 15 min.