At home, in a bowl. Out, in a cone, waffle cone is even better. But I do like DQ blizzards. I have a weakness for ice cream, in a perfect world I could eat ALL I want and not gain a pound.....what a nice world it would be!
Bowl. More practical, less dangerous (can't drop the ice cream unless you have a lot in it) and I hate having to eat the cone to eat more ice cream or eat what's left of the cone in the end. The blend taste ruin it.
The only positive side I can see for the cone is that it's pretty and maybe more ecologically sound or something.