Conditions and use of if, elseif or ORed ifs

[mickey]

I want to know which of the following is better and why. Can you please let me know your thoughts? - Thanks

Set one
----------

if (varialbe == something)
{
//identical code
}

if (variable == somethingElse)
{

//identical code
}


Set two
----------

if (varialbe == something)
{
//identical code
}
elseif (varialbe == somethingElse)
{
//identical code
}
endif


Set 3
-------
if (varialbe == something || variable == somethingElse)
{
//identical code
}


// identical code - excatly same line of code in both the conditions