Nothing to be sorry about Mr Freeze. It is a totally different license.
The CCLI license actually goes up to $1,500. Much more importantly, it only covers about 200,000 Christian songs. The WORSHIPcast license covers more than 16 million Christian and secular songs.
If the song is not in the catalog, you can't webcast it. Do you really want your set list dictated by a limited song catalog? If so, the CCLI license is for you.
Finally, the CCLI license only covers worship services. The WORSHIPcast license covers any of your performances including concerts and video productions.
The CCLI license is a little bit cheaper, but you get what you pay for.