Green mangoes can be good too. I don't know how those in China, Malaysia and Thailand taste, and I hope to, some day. But I can certainly tell you Sindhura tastes good even when it's green.
Also yes, too sweet is weird. That's what happened to some of the varities we tried too. I think some of those pasha pasand and such varieties fell off because they were tooo sweet. I agree with you there.
I have tried dragonfruit. Maybe the ones here aren't as good because they seem very tasteless.. Like jelly.. but tasteless? I'll still try the chilled version this weekend and report back to you, okay?
I've never tried durian too. Don't think I even want to. Have read some really nasty things about the smell.