Firewall systems, hardware/appliance or software-based

You need to research some of the vendors of firewall systems, hardware/appliance or software-based. Find a specific next-gen firewall product that is being sold to smalland mid-sized businesses (lets say revenue less than $1 billion). Read through the vendors sales pitch (their web site marketing material). What attributes of the product do you identify as a next-gen firewall? Which attributes should a next-gen firewall have that arent included in this product?