Personal experience for me .......

The dice I use when I role play a different system all together. I sometimes use a greed d20 and it will either heavily favor the roller or heavily not favor the roller. We also call the d20 die Boba Fett if that is reason enough to roll good or bad. Just remember it is a game and have fun.

Now if in a tourney just hope for decent turn out on the dice much like craps.