How many C9300's have they got?
If less than 50 - I'd probably go thte Meraki way. Catalyst Centre (DNA Centre has changed its name) is hard to scale down this small because of its huge footprint.
If it is more than 500 and then have at least one network engineer on staff - I'd consider the Catalyst Centre direction.
If they prefer cloud based solutions - go Meraki.
If they prefer on-premise based solutions - consider Catalyst Centre.