Preferred usage for 'copy to' for a subset of data

For recent postgres releases, is there any effective difference
(performance/memory/io) between:

create temp table foo as select * from bar where bar.date > '2007-01-01';
copy foo to '/tmp/bar.out';
drop table temp;

and this:

copy ( select * from bar where bar.date > '2007-01-01' ) to '/tmp/bar.out';

...that would lead me to use one method vs. the other on large data sets
(1M+ records)?

Just wondering,
Jason