[pcre-dev] Ungreedy quantification in atomic groups

Is there any performance benefit to using an atomic group that includes
alternates with ungreedy quantification, e.g., something like this?

(?>\\\\|\\t|\\Q.+?\\E|\\$(?:U|u|L|l|T|t)?\\d{1,3})

Or would it be just as well (or better) to omit the (?>

Thanks,
Sheri