Having a GBA and DS growing up, those Mario & Luigi games were practically all I've played on the systems. Must've beat Superstar Saga 15 times(lost count), Bowser's Inside Story around 10 times, Partners in Time about 10 times as well.
I've heard the 3DS titles weren't as good and only tried the Superstar Saga remake once. Felt a lot easier than the original version. The side-game bored me, and these days I can't be bothered to return to my 3DS to play the other titles.