Best so far aside from Super and honestly I preferred it to Super at certain points. The screw attack never felt so good as it does after you get it in this game. The zero suit section was really good and made getting the final upgrades all that much better.

Liked the more linear nature of the game more than I had expected to. Still would prefer more freedom like in Super Metroid, but it was sort of nice sometimes to just be given directions and know that there's really just the one way to go.
The animals come back in a big way in this game and I'm very pleased about it.