I voted twenty-ten cause it has a nice and short ring. But that´s in english in my language I don´t know yet. Probably I´ll say "zweedausendzeng" which would be the equivalent of "Two thousand and ten" in english.
It should have been "twenty hundred" for 2000, but I admit the novelty of "the year two thousand" had a ring to it. Likewise this year should be referred to as "twenty oh-nine" IMO. So yeah, twenty-ten gets my vote for tomorrow.