Elongated Man. This is an acquired affection but a long lasting one.
I acquired my affection for Elongated Man because he was in the back of every DETECTIVE COMIC in the '60s--which obviously I bought for Batman. But Ralph's stories always featured the best artwork--by the likes of Carmine Infantino and Sid Greene and various guest artists.
And the stories by Gardner Fox and John Broome were mysteries. Whether I grew to love mysteries from my love of Elongated Man or I grew to love Elongated Man from my love of mysteries, I can't say. But every story presented an odd situation at the beginning that I knew would be cleared up by the end. So satisfaction. Not an endless tease.
And Ralph didn't bother with a secret identity. Being married, he wasn't always worried that Sue would find out who he was. So the stories weren't taken up with all that soap opera.
Ralph loved Sue and Sue loved Ralph. It was real love--not idealized. Like every husband and wife they could get on each other's nerves and they had their little arguments. But you always knew that they loved each other and maybe more importantly they respected each other.
They were like real people. Except they were rich which allowed them to travel the world. Each story took the reader to a new place, so there were always new things to discover.
Some say that Elongated Man was just DC's revival of Plastic Man. But that's an insult to both characters. Their powers are similar but not the same and they both do detective work--that's about where the similarities end. Ralph is not trying to be absurdly funny--nor are the artists trying to create a ridiculous world. The Dibnys are grounded in their reality. In fact, most of the villains are ordinary crooks--not supervillains--so Ralph is the only super-powered person in the stories, unless one of his super-friends happens to make a guest appearance.