Here are a few talking points to considder with regards to the two management platforms:
Cost (US List price)
Let's assume 100 IAPs and 1 year of service for now.
AirWave VM: AW-100: $8,995
AirWave Support: SA1-AW-100 1yr: $1,620
Total: $10,690
Aruba Central: SUB1-CNP-IAP-1: 1 year per AP: $50 (special through Dec. ’14 normally $140)
Total: $5,000
AirWave
Pro:
More detailed reporting and customizable reports.
More detailed client info
Visualization of the floorplan and RF coverage via VisualRF
Troubleshooting tools for the Helpdesk.
Comes as an appliance or a VM
Zero-Touch provisioning of IAP
Con:
More complex product, due to feature richness, hence steeper learning curve than Central.
Not a multi-tenant application so no separation of client data. Not an issue if you are the only one with access to airWave.
Central
Pro:
Cloud based so no HW/SW to maintain
Simpler product with intuitive interface
Support is included in the subscription
Each customer has their own account and can see only their own networks. "Service Provider login" coming soon
Zero-Touch provisioning of IAP
Con:
Less detailed reporting and not customizable
No VisualRF Plan
I suggest you contact your local Aruba Sales team or Aruba Partner and request an Eval of each product so you can test both and determine which is best for your project. You can try them for 90 days before you buy!