I like that it is simple to set up for my clients, easy to use and they provide support! The biggest benefit of using VOSI Street is being able to integrate with several different telephony applications (such as Skype & Cisco Call Manager). There isn't much i dislike about the program, but if there was anything that could be improved upon id say it would be having more features than what's included at first install. Try out their demo - its great and comes with all the functionality needed without any additional costs. We have been very satisfied so far by VOIPStereyes customer service as well. They make sure our needs are met and give us tips for future improvements/cost savings.