In bigger scripts or to write one-liner? I used syntax print for 1..10 (no parens at all - this syntax IMHO is designed to economize on parens, too), for short lines, but in bigger projects lines became longer and soon I had to break those lines somehow and to decide which line is short and which one long. And decided to go back to 'normal' syntax in every case.

for(1..10)
    { print; }
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if there is only one line of code inside loop/if. No space after 'for' but space after '{' and before '}'.

And if second line of code must be added inside block or in 'for' there is more code, I always change to 'normal' mode:

for(1..10)
{
    print;
    $cnt++;
}
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for(1..10,
    12..30,
    74..112)
{
    print
}
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