I installed mine yesterday (ACT clutch and streetlite flywheel) and I can tell you it chatters pretty good. Chatter at idle is noticeable if you are outside the car, but if you have an exhaust you would probably never hear it over the purr of the VQ (imo, i don't have an exhaust, yet).
My biggest deal with the clutch/flywheel so far is the dramatic change it is from stock (especially one like mine that was slipping so freaking bad). The engage point is so much lower and so much shorter that I stalled out 3 times just getting home from where I installed it. In addition, it shudders pretty bad when starting from a dead stop (maybe my newness to the clutch is making that happen, only time will tell on that).
All that said, I really really like it. I really like the feel of the clutch and how focused it is making me to my driving. It is SO much faster shifting!! You can really tell a difference in the rev of the engine and it definitely perks up the car.
All the way around I like it, but then again, I really don't care if people think my car is falling apart. I know its not and that it would probably kick their cars butt so....
For you, if you think some noise (which is really only if you screw up your driving and are in the wrong gear at low rpm) will impact some girl's view on you, then don't get it... But if you care more about laying down that power, its definitely a good route to go
P.S. if she is dumb enough to actually judge you poorly for upgrading you car then she is not your type of girl or you are just