One lens for weddings

[Zalman Latzkovich]

 For those who shoot weddings,which ONE zoom would you use to shoot weddings
: Nikons 24-120, 28-200, 28-105, 80-200, 70-300,... ?
Or among Tamron/Sigma ?
I guess 80-200 is out of question - it's heavy and bulky, and a little too
costly. So what are the recommendations  ?
I'm using right now 28-80, it's a sharp lens but I'd like to have a bit
wider range.
Appreciate your replies!
Zalman Latzkovich