Basic VoIP/Telephony Integration with Zoho Small Business

Basic VoIP/Telephony Integration with Zoho Small Business

We are a new startup looking to run regular business calling plans with a standard client base.  There will be a need to record conversations and integrate the data with Zoho.  We are obviously trying to keep costs low.  What is the feedback on some of the applications for VoIP that plug in to Zoho and offer unlimited calling plans with solid feature base?  We have considered Kixie and Toky so far but they both really add up to a high monthly cost when you factor in calling in North America unlimited.

Thanks in advance.

Darren