Which purchase tipped you into nirvana.

After owning some excellent gear, which purchase was it that put a big smile on your face?
I think I agree with Tvad, if I remember correctly. It has been a while since I started and I can't remember some things from yesterday never mind 30 to 40 years ago.
I'm hoping to reach Nirvana in about six weeks, when I receive the new speakers I have on order. A pair of Daedalus Ulysses :)

-- Al