I have the PST 1 piece CF full and the front half on my other car(ACPT from Dynamic Racing).

No vibration in any form.

BOTH make a HUGE difference on drivability. I won't own a 3s without one.

Its better all around, no more 40lbs rotating mass, your car is 20% better across the board. No more worry about driveshaft bushings... no more worry about it breaking, lower revs when pulling away from a stop light/sign. Quicker acceleration, lighter car...

Whats not to love? If you can get one used, get one. If you can afford the 1000$ i think its a great bang for your buck.

Daily driver? A must? Nothing is a must. Just you'll enjoy driving the car by 15-20%.

I can pop my clutch at like 800 rpm and it takes off.