I gave back my Cent and kept a plat. Best decision ever.
BTW once you return your Cent you keep the old perks until the exp date of your card. So my exp date was 09/16. Gave the card back in July and still enjoying all the perks of the cent including DL status/SWU.
I feel like I saved $5k/year...(we had 2 cards).
For me being AA exec plat + Admiral Club works just fine. I see zero benefit in the Cent as is. The JP Morgan Palladium looks like the one to get.