I had both white and purple. I had hoped the purple would be sweeter but I never noticed a difference. It's hard to describe in words what how sweet something is but if I was to rank every fruit I've ever eaten in terms of sweetness Dragon Fruit would be at or near the bottom. I've have bland watermelon but I've had tons of sweet watermelon. I've bland other melons but I've had ton of sweet ones. I've never had a unsweet mango or an unsweet lychee or an unsweet mangosteen. I have had unsweet strawberries but mostly sweet ones.

Anyway, I'll keep trying dragon fruit hoping for a sweet one.

I think at the moment my favorite fruit I've had in SE Asia is cherimoya and I'm surprised they are not way more popular as they are so dang delicious! It's like someone made an apple + orange creamsicle fruit

OH Custard Apple!!! The best I've had is in Taiwan.

It's one of my wifes favourite fruits, but we can't find good one in Singapore.

Don't they have them in regular grocery stores in Singapore? They might only have them when they're in season though.

They aren't very good. A lot of the time they are rock hard and if you let them rippen they don't turn out very good. Just used to Taiwan where it's always nice and soft and yummy.

Try yellow dragon fruit. It actually has a flavor. I find white and red to be bland or maybe grassy tasting. Yellow is sweet.