We are just moving over to ReadyTalk which out of all testing and requirements meets our needs.
I have used and Adobe Connect in the past and could never get the connector to work properly. Adobe Connect overall is not a great experience. Currently we use WebEx, which is one of the most expensive and useless Webinar platforms out there, it has an ok connector but has a very bad user experience and needs the user to download an app to view, which in B2B world can be near impossible to install due to companies security restrictions.
I 2nd Josh's GTW suggestion, it has a great experience, a good connector and easy to use.
I think the best starting point is to put together a features and flaws comparison document for each provider so that you can see the benefits of moving from one to another.
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