It is interesting that the more popular dahlias here at ATP are mostly the smaller ones. While out in the rest of the world its the "dinner plate" dahlias that grab the attention. I seem most attracted to the medium sized blooms 4-6", but have a few of the big ones in my dahlia patch.
These are all 8" - 10" blooms
Harvest Moonlight
Imelda Ransel
Inland Dynasty
Kelvin Floodlight
Kenora Wildfire
Maisey Mooney
Maniac
Spartacus
Wyn's Cinnabar
Vassio Meggos