the domestic one is usually poor in economy class, but business class food is great
while for international flight, food is always good, even for economy class

Hope this is a good news for economy class:
Malaysia Airlines revamps economy class meals

Will be flying to Sg on Thursday. May I know how good the PPL in Changi Terminal one is?

I just tried entering PPL Changi T1 twice with my citi PM visa today. No problem

Experience in oversea lounges using priority pass/citibank premiermiles:

Copenhagen Kastrup (Terminal 2): Aspire lounge and Aviator lounge both are having the same food, free flow of beer, liquor or wine. Aviator opens earlier at 5:30am, advise to go early as the queue might be long in the morning

Stockholm Arlanda (Terminal 5): Menzies Business Lounge - opens at 5:30am. Food is almost same as CPH's lounges. Free flow of beer, liquor and wine.

Helsinki Vantaa (Terminal 2): Aspire Lounge - opens at 5:30am and closes at 8:30pm. Food is the best compared to the above two places. Free flow of beer, liquor and wine. They have shower facilities (€10.00).

Singapore PPL (Terminal 1) - opens 24 hour, no beer/wine or liquor, free shower facility, food is great especially laksa. Could be a bit far from both terminal 2/3.