After having my attention drawn to a video featuing Lou Zocchi (part 2 here), I bought some of his dice. 3d6 in clear sapphire, 5d6 in clear ruby (you can tell I hope to play some GURPS sometime). They’re attractive (I’d been looking for sharp-edged dice that don’t cost a bundle and aren’t dotted) and he makes the case for them being better dice.
So, I recommend Gamescience dice. I got them in the mail yesterday and I like them. I inked them with a fine tip Sharpie pen (not a marker) and they seem nice. They’re light; they feel lighter than most dice I’ve ever had. But they’re pretty and the should generate reasonably random numbers.