If you have bolt ons the oem clutch is fine, if you have a ctsc the spec clutch works well for that. I have one of each for sale btw. Oh and I'm not saying that because I want to sell my stuff, it's because I have used them both on both conditions.
I have SOS 350 with damper delete & grabs quick with very little lag. Have to use a little more leg muscles but not too bad. Chatters here & there slightly but not enough to annoy. So far 4k miles on it but you can't go wrong with OEM duals.
A clutch is not a cheap proposition. I would highly recommend testing a few out in real life before spending the time, money, and effort in a replacement.
And add the OS Giken twin clutch. It's the one going in a few of our cars here in SoCal including mine.