I just finished installing my new Exedy clutch from JDM Sam this afternoon (he could tell you which one I got, can't remember). It drives like a new car compared to the stage 5, 3-puck unsprung Bully unit I pulled out. I also had my flywheel resurfaced by a large local shop that only does clutch and flywheel work. They did an excellent job.
FWIW, you could always run the middle ground and have your stock flywheel lightened. Mine was already done when I bought it and I have no idea who did the work, but it appears to be of very good quality. I should have weighed it while it was out of the car again, but forgot to. I can definitely tell a difference over the stock flywheel (revs quicker), but it still operates very smoothly.
PM me if you want my pics of the lightened flywheel next to my factory unit for comparison. Someone out there should be able to do the work, and it should be much cheaper than an aftermarket unit.