I am an Elvis Presley fan, he was a great natural singer, and did some great songs.
IMHO His "Reconsider Baby" is much better than Lowell Fulson's and he did a lot of other great songs. On the other hand, he did a lot of kitsch too; "Rock-a-hula Baby" will never be on my iPod but "Are You Lonesome Tonight" is. His English derivative take on "O Sole Mio" retitled "It's Now Or Never" is even a very nice cut.
But I tend to prefer the older Elvis cuts.
Bobby Darin turned the corny Tin Pan Alley song, "You Must Have Been A Beautiful Baby" into a damned decent rock song, and his take on "Mack The Knife" has stood the test of time to become the definitive version of that song.
I still tend to prefer the vast majority of the originals to the covers, but there are many delightful exceptions.
Insights and incites by Notes