Chose OmniGraffle
Axure RP is almost unnecessarily complicated in some areas and the UI can be drastically improved. FlairBuilder is great overall but lack of or slow support is what hurts it. OmniGraffle is one of my top 2 choices currently and InvisionApp is the other.
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