I read somewhere that to choose a firearm that will be comfortable in your hand, do the following.
Pick up a handgun and aim it at a chosen target. As soon as you have achieved a sight picture, close your eyes for ten seconds. Open your eyes and note how far off your target you are now aiming. If the handgun is of the correct size and weight, you will not be far off your target. IF, however, you are WAY off, try another make/model, until you find one you can hold close to "on target".
Sounds a little odd, but it HAS helped a few friends choose their first handguns?
Take a Basic Pistol Course BEFORE you make the purchase! There are several instructors on here and believe me you will be glad you did! I have student show up all the time with new guns they can't operate for a multitude of reasons. Al because they had no experience and bought what somebody told them to get. In a class you get to try several on for size and practice loading unloading and dry firing a wide variety of handguns. (At least in MY class!) This will help you with your purchase. Good luck!
My wife and I just received out LTCH's and we are shopping for best options for carry. We have been told to look for low maintenance, revolver, lightweight, hammerless, .38. Possibly Ruger LCR or S&W 442. Any suggestions and/or advice? Thanks.