I really like the old school Chessex single color dice, they're much easier to read, and just have more "character" than the marbled or oddly colored Crystal Caste ones. Of all my dice, the set that came with the 2nd Edition Boxed Set (my first foray into the game) still seem to roll the best, and just feel better in my hand.
All of this, of course, means very little for me now, since I'm playing in an IRC game that uses
this dicebot. It's fairly nice, easy to do complex/multiple rolls, send private rolls, etc, and uses HotBits for random seeds (random numbers based off of the decay of nuclear material). I'd say it's about as random as you can get, since the
true sign of real random numbers is the occasional appearance of seemingly non-random strings of numbers. As in, I went one session where I rolled a good 10 or so times without getting a result above 10, and rolled something in the range of 7 natural 1's (which suck in combination with critical miss tables). While I can't say I'm happy with those results, my character survived, and it's a helluva story to tell.