I have two sets that I use, one red with white, the other red with black, and, of course, my lucky d20 that I've had forever (and that's a mighty long time). People always accuse me that it is unbalanced or fixed because it has a paint filled crack that runs through it (from the mfg), but after a few rolls, they agree that it is still random...I swear!
I also put out the Big Bowl of DiceTM which has more than enough dice for everyone else to use if needed...benefits of being a veteran gamer.