A bit late in the discussion, but NEC 210.6 (A)(2) actually wants any appliance that runs below 1440 VA to be 120 volts. Personally I think its one of the dumbest rules, but it might be something an inspector may site for say an alarm clock or Euro radio.
And yes, Ive tried the 240 volt 3KW Panini grill and kettle before. Once you try, it changes you. You never go back
