Push from USAA Checking. I PIF the one day before the due date.
online... For most I add my banking into the card website and pull from there. The exception is when I want/need to pay more than the statement (Chase) and then i push that from the bank to the card.
In all seriousness though, I link my checking account to each creditors website. I then make payments through my linked checking account on each of my ccc's respective websites.
Pay from my iphone on the cards app, while in bed.
Accounts set up with cards already. Im lazy.