For me Cisco is great here, because it's something an organisation already knows how to source, turn-up, upgrade, troubleshoot, maintain. And you get a broad set of features you might want, IPSEC, DMVPN, BGP, ISIS, and so forth.
I keep wondering why everyone is so focused on OOB hardware cost, when in my experience the ethernet connection is ~200-300USD (150USD can be just xconn) MRC. So in 10 years, you'll pay 24k to 36k just for the OOB WAN, masking the hardware price. And 10years, to me, doesn't sound even particularly long a time for a console setup.