looking for 2 unit air purifier with ionizer function for living room and master room... previously use the 1 free by diomand water but spoilt already.

no plan any budget at this moment, looking for value buy yet comes with a good function that suit me. is there any promotion going on?

I bought a Sharp KCD40E and am wondering do I use normal tap water as instructed by the user manual or will it better if I use distilled water for the dehumidifier function?