I am going to presume that the gentleman who started the thread is referring to a revolver's double-action trigger pull, as all of the better makes have single-action pulls that seldom cause complaints. Since he mentioned Ruger's LCR I will also assume that he and his wife are shopping for one of the smaller .38 Special "snubby" style guns. If I am wrong he can correct me, and I will expand my observations.
Most of the revolvers on the market that meet the above description were designed to have both a single-action and double-action option. While some of them may have an enclosed or shrouded hammer and are expected to be used in the double-action mode only, they are still based on previous designs, and because of this the double-action suffers somewhat.
However recently both Ruger and Smith & Wesson introduced new models that were created from the ground up to have double-action trigger pulls only, and these don't represent any of the usual compromises. The result is the best possible double-action trigger pull with full-strength springs that insure reliability regardless of what ammunition is used, and or/if the guns are neglected. Regardless of what one buys, absolute reliability should be job-one.
Ruger's offering is the previously mentioned LCR (Light,Carry, Revolver; While Smith & Wesson call their entry the .38 Special Bodyguard. Be aware that they're is an earlier model also called the "Bodyguard" which is not the one under consideration. In purchasing a new, current production revolver these are the two I would look at first.
Small size works against having a light double-action trigger pull. Going to a larger revolver is advantageous. But I won't go into details until I have a better idea of what exactly is required.