Thanks for all the input.

But after reading thru everything I am a little confused?

Which type of motor is more energy efficient (uses less KW or Amps to run a pool, Cost less)
VFD or ectro-mechanical hi-E 2-speed?

And does the ImPower have the same efficent as a VFD? The specs say that the ImPower has max 1.25 Output (1 HP up-rate) and 3 speeds (3450, 2600, 1725)