Question

I keep using Oran Berries and my Ice cream isn't sticky at all...

Comments

actually, i pretty much did answer your question, seeing as oran seems to be the most common and since berry stats don't matter i would say most common = most effective berry use.  if you really feel the need to bite the head off of someone giving you help maybe you should go back to bed.

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I'm fully rested straight out of the pokemon center :]

And the oran berry is actually one of the worste berries to use for the Ice Cream scoop game.
Not trying to " Bite your head off "

Answer 1

Generally you want the best stickiness. Bulbapedia has a list of the berries and scoop/stickiness. None of them create great stickiness all round but these berries get you 3, 4 and 5: Cheri, Chesto, Pecha, Rawst, Aspear, and some of the 'legendary berries' which I don't think are available in B/W.

So any of those 4 I would say are the best.

Answer 2

I use persim berries and my scores are mostly in the 20,000's so for me I think the persim berries are the most effective

Answer 3

If you find Lum Berries in the Spooky Manor, they are also very effective for stickiness.
hope I helped! :)