Biggest leap from one system to its successor in the 3D era in your opinion

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farlaff said:

No doubt: PS2-GC era coming from PS1-64. There's no discussion here, as, to be very blunt and honest, following generations have been pretty much iterations of that early 2000's that we have been experiencing ever since.

Which specific system to the next? N64 to Gamecube? PS1 to PS2? Saturn to Dreamcast?