In our expert opinion, we think that Nextiva is the best to use for conference calls. Nextiva lets you easily host audio conference calls using a virtual business phone number. It also offers powerful telephony features for your business.
For video conference calls, we recommend RingCentral. It comes with advanced features like cloud recording, whiteboard, meeting summaries, breakout rooms, and more. Plus, callers can join your meetings right from their web browsers.