Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

I think that the Stages is a nice bit of kit that is (now) far too expensive, given the price cut that Power Taps have recently enjoyed.

It's significantly less than a power2max though, and arguably as accurate, plus I'd only need one whereas for Power Tap I'd need to buy a minimum of two, maybe more.