Which One Of These Two Mics... Options

[greatday]

I have been looking around for a new microphone to recored classical vocalists(soprano) and piano using only one mic. I'm looking for a highly portable solution. Unfortunately my old recorder(Marantz PDM410 tape recorder) doesn't have phantom power and I don't want yet more stuff to run around with.
What do you guys think of these options,..or any other wich may come to mind:

ALK C-1000S or Rode NT3 ..they both are battery powered and so seem to be ok.

Any thoughts? ... and just in case if anyone feels like typing or refering me further: What is/are the technicak differences between a pure condenser and electric condenser (i.e. my choices)

Thanks for any help/input!!