Any Triathlon "beta" early adopter stories?

I’ve been shopping around for an X-lab Sonic Wing to replace a BC Hydrotail. I bought the hydrotail when they were both fairly new on the market, now I see I did not choose wisely. The perils of being an early adopter. It got me thinking, I wonder what tri-related products have since gone the way of Beta tapes and HD DVD? (Not that I’m comparing the Hydrotail to Beta)

Do you have some “next greatest gadget” sitting around that has now become a collector’s item?

x2 on the HydroTail…what a fiasco (at least for me)…never could get it to attach correctly to my Fizik saddle…the one I have looks like a total prototype. I simply look at these purchases as forwarding the collective good.