Chose Sizmek Ad Suite (discontinued)
For me the main point here is the support, all the adservers offer more or less the same functionality and capabilities. The real advantage you will gain using Sizmek will be their customer support team and their open approach with other vendors.
Independently Invited by TrustRadius
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info