i have a Best Buy card, but it's the store card and not the credit card. I have a Target card, but it's not a credit card. It comes straight from my debit, but i get 5% off my target purchases.
I have 4 credit cards. 2 have zero balances, 1 has a balance under $250 and the other i use for everything else and is like at $4k. i'll pay that off next year. i keep the 4 because it keeps my debt ratio low and my credit high. When they offer credit line in creases, that helps with that too.