Tips for buying a drone

I am new to the drone world and I would like to purchase a platform that would allow me to do some development (mostly post processing for the time being).

  • It should have the capability of logging all raw data (e.g. IMU at high frequency, GNSS, Camera footage)
  • Ideally it should also have already a good localization implemented (that I could potentially use as ground truth).
  • I don’t have any specific use case at the moment (i.e. no requirements of speeds,etc.).
    I am going thorugh the begineer resources but if you have any tips that would be much appreciated.