The reason I choose a TNG assignment (hopefully on a Galaxy or Nebula class Starship) is because it would be more comfortable. Yes, Voyager and Deep Space 9 are in the 24th century, but Deep Space 9 is on a moderately comfortable Cardassian mining station and Voyager is on a smaller starship (compared to the E-D in provisions) in the Delta Quadrant (thousands of light years from home).