Honestly, we adore RingCentral and think it is superior to many of VoIP competitors. The deal is that Nextiva is awesome for mid-size businesses and RingCentral cuts discounts off after 100 users. So, it really depends on the size of your business. Both have star ratings of 4.5 in our books and both are highly competitive. It really depends on your specific needs but generally, they are comparable.