I have a credit card with a very low limit, which I finish regularly in a very limited time. will using it to the limit and pay the balance several time per one statement help to build the credit score and increase the limit.
If not, I should probably use the credit card until I reach the limit and start using the debit card, because it's annoying to monitor the usage and pay the balance every couple of days. but it worth it if this help to increase the limit quickly and build up the credit score.