Sending continuous data flow Bluetooth or Xbee or ?

Hi,
I'm working on a prototype.
an arduino would use an accelerometer to track XYZ orientations and would send continuously those triplets to the computer.

I'd like to figure out which hardware you would use for this need.

I want to add I'd use a battery to power supply the arduino (a nano probably)
So maybe, one or the other wireless hardware would save power compared to the other.

My way would be:
nano + BT module + accelerometer XYZ + power supply battery

Any advice about the wireless part ?

Best,