Controller vs. Cloud-based (cloud controller)

                   We are trying to navigate the waters in choosing between a in-house, controller-based, wireless network solution or a cloud-based solution. We have been presented with the usual suspects in cloud-based (Aerohive, Meracki, etc) and with Cisco (5500) and Aruba on the other side. We are a multi-campus organization with approx. 200 APs.
Any hard reasons why go with a controller-based vs. cloud-based solution? If we must keep the conversation limited to Cisco, why go Meracki over Cisco's WLC solutions or vise versa?

For the project I am working on the Meracki solution has the following disadvantages:
- The client has a strict secuirty policy that prevents the off-shoring of any data.
- Our standard SmartNet maintenance contract includes the on-site replacement of faulty equipment. It appears that Meracki does not offer this option.
- I am based in the Southern Hemisphere. I found no Customer deployment stories on the web site for this region, only for US and European locations. Not sure therefore if they are shipping to countries in this region yet.
- The web site talks about how software is automatically updated on WAPs. I would require more information as to how this is scheduled so as to minimise downtime.
Advantages of Meracki
- Meracki is owned by Cisco.
- Where I live skilled wireless engineers are in short supply. At face value it appears with the Meracki solution you could hire more junior wireless engineers.
- The 99.99% SLA is attractive.
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