Man.. talking about repainting.. it was a nightmare.. LOL.. painting the ceiling is like killing me off.. about 10 - 11ft height, and with just extension pole, my neck and back is totally gone at night time. 

For my case, I have plaster ceiling. The shop recommend to use just normal base coat, the Nippon Matex. Cheaper alternative is Maxilite.

My wall I went for full white, by Nippon also, Vinilex EasyWash.

All the above, double coated for better coverage and durability. Walls were all sand-papered and wipe with damp cloth before apply paint.

Nippon Matex 18L - about RM 70
Nippon Vinilex EasyWash 18L - about RM 250