This is contentious. I have three charge cards for more years than I want to reveal. Some years ago I rebuilt my credit using them because requiring payment in full each month was an external source of discipline.
They don't count against utl either way because the monthly payment in full is a given, not a choice as with credit cards. There are those (H) who will remind us that TU does count it in you utl. This may be so, however, all three of my reports have always been equal, except my TU is my highest score by far. So, if it is counting I wish they all did. (it shows the same substantial usage across all reports)
The advantage based on the above is that you can use the heck out of your charge card all month and not affect your other more touchy plastic so that you maintain a nice upward movement in your score.
This is my personal experience. If it does not seem to equate to others' experience I can't explain it. (It has been suggested though that the longer one has and uses charge cards, that are pif each month, the less they are noted by scoring.
Good luck,
CI
