Nice! Well I have a vid you can reference to. I have a stage 2 with the mods in my sig.
I say stage 2 is worth it, not as drastic as from stock to stage 1 but definately noticable.
Honestly it may not seem like a differnece just by looking at both our videos but stage 2 just feels faster at every gear. and pulls harder through each gear. It may look "identical" from the videos but i'm sure you will like the stage 2 much more than stage 1