Friend of mine broke his Power2Max/Rotor3D crankset during the 750m TT at Master's Worlds last week. Drive side crank arm basically disintegrated where it connects to the spider. Not sure if Power2Max or Rotor should get the blame for that, but I'm pretty sure he wouldn't recommend either brand at this point.
I have the Sugino 75DD crankset, happy with it so far. It was a little pricey, but included the bottom bracket and a nice chain ring, making it a better deal than it might appear at first glance (in the US, at least).