Freeconferencecall.com is the best. It's simple to use, it's a great system to have multiple callers from different locations and it's free. I have really never had any issues with FreeConferenceCall. You give out a phone number an and access code and you are ready to go.
Quality is good. It's simple. It's not the best system I've ever seen, but it's free.
Without question this is the best conference call system.
I've used their system for many years and have had many conference calls with it. It's so easy to use for multiple callers calling in together. Before using this we would have a group of individuals gathered around a desk trying to listen to speakerphone and you would have to take turns leaning in to speak. But now we all just stay at our desks and have the call. So much easier. Especially if someone isn't that vital to the call they can sit at their desk and work and listen in on the call in case they need to add something.