All the video streams are put in a circle which can be rather annoying when trying to demo products. But, they don't require the end user to install or signup for anything so that's nice, and they were a bit cheaper when we went with them.
I really struggle with Join.me even though it has promising parts. The phone app is pretty good, simple to use and able to participate or facilitate on a call on the go. But the integration with Google Calendar is poor, often not creating the actual join.me meetings. Also, unless you download the app on desktop or mobile you cannot share screens. The user experience is very hard when trying to get external participants to install the app. Occasionally, the phone quality is poor and drop calls are often enough to be noticeable and feel unprofessional when using with customers. If Join.me could resolve these issues and be more stable I think it has the opportunity to be very good.
Initially thought the grass was greener, but after hearing from many others on their videoconferencing / conference call / screen share / recording software, I think it's just a hard space and it's not going to be perfect. I've come to terms with the fact that Join.me is the right fit for us and any perceived advantages of others will just be weighed down by other disadvantages that join.me won't have.