PreparedStatement and SYSDATE Performance Tuning

Hi,

I have a quick question. Which is faster as a preparedstatement in a
loop (ie, doesn't get reparsed)? Does anyone have a definitive answer
and not a hunch like me?

1) insert into aaa values (?,?,SYSDATE)
2) insert into aaa values (?,?,?) where 3rd ? is a java.util.Date

Regarding re-parsing, would SYSDATE be considered a literal or a
function-return-value and therefore force a similar statement to be
re-parsed?

Lets say that Oracle is very smart, and doesn't reparse if SYSDATE is
the only function or part of a PreparedStatement that changes. In that
case would...

insert into aaa values (?,?,TRUNC(SYSDATE))

be re-parsed or not?

.