So far, I have only had to deal with this for my two Citi AA cards. I downgraded both, but that's partly because I haven't figured out how to churn them yet (in other words, if I'll need to cancel them completely to apply again later and get the bonus after minimum spend, or if I can keep the two downgraded cards and apply for the better card later). I also don't know how long I have to wait to do this. It seems to me, that to keep myself from having 20 cards (and instead like 10 ), I should cancel them if there of no use to me, and to avoid the annual fee. My delta and US airways cards are about to come up for annual fee as well, so I need to decide soon on whether to cancel or try to downgrade! I know these cards all have different rules/tricks on how to churn them. Looking for any insight you all have.