Love a S&W 686 for a base revolver (L Frame .357 mag)...
.38 is cheap to shoot, easy to come by, incredibly accurate out of an L frame, etc..
and you can always step up to the magnum cartridge if you want to take it hunting, throw it in the bedside table as a home defense weapon, etc..
Its a little big for CCW.. and (IMO) there are better options for that requirement..
but if youre wanting just a couple of wheel guns in the collection.. its hard to get more versatility, reliability, capability, etc.. than youll get out of an L Frame .357 mag.. (the stainless steel frame and cylinder make it super low maintenance as well.. an added plus..)..
[video=youtube_share;SS6Qr1CQ_kM]http://youtu.be/SS6Qr1CQ_kM[/video]
Hard to argue with Jerry Miculek's (one of, if not the single finest revolver shooter in the world.. ) regular choice in handguns...