There's no such thing as that. You can try your strategies and see what suits you the best but in the end it all comes down to luck. For me I have found Roulette to bring me more luck than any dice.
Thanks for the feedback! I'll try roulette too!
Roulette has a much higher house edge than dice (2.7% in European roulette vs 1% in majority of dice sites), and so you should have better result (I mean, a smaller gambling loss) in dice.