I'm looking into buying an LSD for my Prelude transmission. I heard Quaife is the sh*t. I haven't heard much about phantom grip. You pay about $850 for the quaife and about $300 for the phantom grip. Which LSD would be the best for drag? I know that about 90% of the time you get what you pay for but I don't think there should be much of a difference here. Any experience out there???