AverageCitizen
Explorer
I use hex exclusively for D&D. I'm not into minis, so size doesn't matter a whole lot to me. One of my players brings minis though, and 1" does the trick. A little bigger may or may not be nice; certainly not any smaller.
What edition are you playing?
We use 4e and have been seriously considering trying to switch it over to a hex system. What are the advantages/drawbacks?
Note for the OP: We don't use minis, we just dice and coins and stuff, so the size doesn't really matter. Closer to 1' the better, I'd guess.