I just punched through my first go around on SNES. It was bursting with nostalgia for me. I felt like a elementary school kid all over again. The music alone reached somewhere in the back of my mind and made me feel giddy.
I picked Raphael because I never used him as a kid. He was always a grouch in the movies and cartoons so when we pretended to be Turtles or played the video games nobody wanted to be Raph. It almost seems like he has a shorter range of attack than other Turtles as well so that may have been another reason I never used him.
I also had a hard time hitting Krang in his space ship. That part took me the longest to beat.
I have some ending commentary in the spoiler... if it really matters on this game.