stock spring is a blue/silver/blue 35kg preload and 101 kg total force....
your choices are blue/pink/blue @30-96kg
and white/pink/white @30-104kg
the first number is your preload which controls engagement...the stocker is 35...so these two are 5kg less preload force...
the 96 total force (b-p-b) will give you a slightly lower shift point i.e. more relaxed and yes a lower smoother engagement...
the other will give a slightly higher than stock shift point....more revy...with again a lower smoother engagement