I see no reason to go back to Cap1 once you have closed them, there are much better options out there. The only reason I leave mine open is that there is no AF and it's the only card I have that has no foreign transaction fees. It's also my oldest account for the AAoA. But it's stuck at $750 (sounds familiar to anyone else?)
Capital One Journey (12/2010) $750 | Chase Freedom (03/2012) $3500 | American Express Zync (03/2012) NSPL | Amazon Prime (08/2018) $6000 | Chase Sapphire Preferred (10/2018) $8000 | Bank of America Cash Reward 10/2018 $8000 | Chase Freedom Unlimited 06/2019 $2700
Experian score: 793 (9/2018)