All that really matters is how employers look at the time.
And that's really the bottom line. Not necessarily whether your prospective employer cares or not, but what you are using the time for.
The FAR only
requires that you log the time that you need to show currency or the satisfaction of requirements for a certificate or rating. Beyond that, it's what other purposes that you want to use the time for.
For example, are you a private pilot working on the commercial? Acting as PIC/Safety Pilot for a friend may help you reach that 100 hours of
logged PIC time and maybe even that 50 hours of
logged 50+NM cross-country time. (Yup, you get to log cross-country without ever touching the controls or performing a landing — crap, I can just smell another argument brewing!)
I've known pilots who, in order to keep various requirements straight have multiple columns in their logbook to reflect different timekeeping requirements.
Separate PIC columns for Sole Manipulator, Safety Pilot PIC, Acting+Logging, and Acting-but-not-logable.
A Column for 50+ NM cross-countries (countable for most certificates and ratings) and separate columns for all cross-country time (any flight involving a landing at another airport that you didn't blunder over to by accident) and 50+ NM cross-countries without a landing (countable for ATP requirements)
Columns for high performance and complex (some insurance companies like to know this)
WHEW!!
Makes you appreciate a good computer logbook!