Displaying longest string in column

I get the feeling there should be a simpler way but this array formula (confirm with ctrl+shift+enter) would do it:
=INDEX(A1:A300,SUM(IF(LEN(A1:A300)=MAX(LEN(A1:A300)),ROW(A1:A300),0)))

Adjust 300 to the size of your data set as neccessary.

Edit: thinking about it, that won't work if there are two strings that both have the same/longest length, try this instead:
=INDEX(A1:A300,MIN(IF(LEN(A1:A300)=MAX(LEN(A1:A300)),ROW(A1:A300),0)))

Hi
Maybe this formula would help. Its an array formula, thus hit Ctrl+Shift+Enter
=INDEX($A$1:$A$700,MATCH(MAX(LEN($A$1:$A$700)),LEN($A$1:$A$700),0))