SKILL command: setof , exists

[I-F AB]

Hi,

I have a list of lists & want to match a single data from inside it.
I'm wondering if anyone knows which would be faster to use:

caar(setof(x SomeKindOfLargeList cadr(x)=="metal" ))
caar(exists(x SomeKindOfLargeList cadr(x)=="metal" ))

I think I can check using Virtuoso's debugger but I'm not good at it.

Thanks in advance,
I-FAB