I haven't beaten this game yet, but it's really good so far.
Yeah, I think I'm about 4/6 done with the game, and it is really good!
Mario & Luigi: Bowser's Inside Story get. While not as good as the original, it's a definitive improvement over its predecessor in just about every thinkable aspect.
I disagree with at least one aspect: Music
So far, I think that one particular song is played
too often, especially when you're playing the Bros. inside Bowser's body, where the same song will play until you move Bowser to another area. I also find the music less varied. In Partners In Time and Superstar Saga, about every area had a unique song, while this game plays the same song for many different areas, including
The Tower of Yikk and the Path to Bowser's Castle.