THIS IS SOLID. it's ideal to when you are going for the S-RANK is to have supersonic mode enabled just as you think you are about to get to a hard part if you are at that point in the ACT,activate supersonic mode. the classic supersonic mode will give you a brief amount of immortality and your jumping and speed is slightly amplified, the modern supersonic is somewhat different.it still utilizes the same supersonic abilities as the classic sonic but the modern sonic is different.when activated you can skip a huge part of the map but from on my clip i waited till i got to the point where i have to ground stomp the multiple lava pads to enable it.