I definitely love fusion, but it's controls have nowhere near the depth and elegance of super metroid, and zero mission to a lesser extent.
I find it rather embarrassing to admit that fusion is the first metroid I ever played, mainly because I thought it was !@#$% amazing and it had to be the best in the series, but after playing super metroid probably 50 times now, SM is definitely the best in the series.
You just can't beat the atmosphere, structure and gameplay depth, and this is gonna sound cocky, but from my own experience, you just don't know what you're talking about until you experience super metroid 100%
just the little touches like being able to launch yourself off enemies, even the glitches in super metroid are fuckin awesome