We gave Zoho a try, but found it vert un-intuitive ( maybe it was us ?) also, at the time, calendar was not part of standard offering - for a CRM !!
if either of you want to contact me, i'd be glad to show you a basic overview of zoho and how it works with Quotewerks. (cloudtopoffice.com)
Currently evaluating Zoho in consideration of moving off Goldmine. Has anyone made this migration? If so, what are your thoughts on using Zoho to replace Goldmine>