:eq() vs .eq()

:eq() vs .eq()

I wanted to know if there was an advantage to using the :eq() selector over the .eq() method? 

For example: If I wanted to select the second-column cell in a table row, is it more efficient for me to use $("table tr td:eq(1)") as opposed to $("table tr td").eq(1)? 

Logically, it seems to me that best practices call for the former rather than the latter because the latter selector grabs much more than what I'm interested in. Am I correct in thinking this?