It will take quite a few attempts before you are able to appreciate the aroma, the texture, the moisture content and the taste (bitter or sweet) of the better grade durians. So I dont think you should be overly obsessed in getting the best experience on your first attempt.

I personally would not purchase the fruit during raining season as the fruit tends to be "wet" and soggy after heavy rainfalls. Most people prefer the sweeter version of the fruit while I like bitter version which seems to have a very slight alcohol content. And I find durians to be particularly pleasant to my taste buds after a sour meal like tom yum goong.

And thanks for starting this thread, I couldnt resist the temptation and I am actually enjoying eating durians now while I type

(my durian is a little "wet" , i forgot it rained heavily here 2-3 days ago; but still an enjoyable experience)