Final has it's good moments, and it's bad moments. I, for one, enjoyed the game, despite the major slowdown in stage 3, I think it was. Other than that, graphics, sound, BGM, weapons, bosses and backgrounds were all cool IMO. I can never get used to the last stage. It's freakin' amazing.
R-type Final sucked so bad I pretend the series ended with Delta. It was a perfect game with a perfect ending. The last stage is one of my all time favourites too.
But I'm happy to know that Gradius isn't over. In fact the series is more lively than it's ever been.
You have to give credit to Final for having 100 ships to unlock. I didnt like the music in Final compared to Delta but the awesome gameplay was still intact. The strangest level in Final was the imaculate love making couple in the background of a later level.