So after one particularly disastrous game, I've discovered that roughly half the dice I have with special symbols have the mark on the 6, and the other half on the 1. Which got me thinking - the 1 seems logical because it's replacing a single dot with a single symbol, on the other hand 6's are often super-relevant (hey rending...) and I can see wanting to associate whatever symbol with "Awesome!"

So I was curious - do you have a preference ,and if so, for which?