[Elvis van Foster]

If a lot of utilities are in your ceiling above, a hung ceiling makes its easy/cheap/quick to fix leaky pipes or re-route electrical wires, or install the utilities of the future. Seriously consider it, becuase all it takes is one average "event" to make up any difference in cost.

One more thing. Moisture and the strong possibility of accompanying mold is one of the biggest $$$ problems facing the building industry today outside of government meddling. Make sure that moisture inside the basement wall has a path to travel (in other words, don't have evaporation--proof barriers on both side of them. And always check to see that water runs away from the building. Just a little backwards slope or a little depression in the ground against the foundation creates a path for rainwater or irrigation water to seep slowly downward over time, and lets mold/mildew grow slowly inside the wall cavities, starting at the bottom usually.

Keep the perimeter of those walls as clutter-free as possible so a to promote ventilation and to make it easy to check regularly. I know. Even though I have a lot of experience in this area, I had a spot mildew problem in a confined closet wall because of a combination of the reasons mentioned above. Although rather small, it was an ugly mess to deal with,

[Bobby777]

true ... I fixed a leaky shower base which was over the garage ... just built a door / frame for future access (didn't do that for another plumbing area ... hope I don't have to go in there again.