Dehumidifying a basement apartment--protable AC Dry Mode or dedicated dehumidifier?
Thanks....well, I went out and bought a Toshiba 50 pint dehumidifier to see which one is more efficient in removing the humidity.  Well, the Toshiba does a better job in removing the humidity but it adds about an extra 4 degree warmer in my basement apartment.  The Toshiba can easily get the humidity down to near 40%, when my LG portable AC couldn't....even running it for more than 8 hours.  The lowest humidity the LG could get down to is around 60% with 73 degree.  The Toshiba can easily maintain the humidity around 50% for the entire night but keeping the indoor temperature around 81 degree.
Personally, I would prefer lower humidity but warmer than higher humidity but cooler.