What could be the best choice when choosing for a Next Geneation Firewall (NGFW) in securing your organization’s network?

My answer... It depends. 
If it's an adoption from scratch, the decision isn't solely based on technology but also on economic factors and local availability for scaling up. Additionally, with many companies operating globally, their choice must consider their presence in different world regions. 
If there is already a network infrastructure in place and the brand isn't performing as expected, without a migrations, those that can have a seamless integration.
I'm also surprised Cisco isn't mentioned in the list.