I have TRIED many plug-ins trying to integrate google fonts into my visual editor but none has worked as well as this one.
So far it didn't clash with any of the other plug-ins(TinyMCE Advanced 3.5.9) I have. I use wordpress 3.8.1
The installation process is painless compared to some others. I got it up In 2 mins, compared to others that took me more than an hour (and still couldn't work)
I like the straightforward interface of this one. Preview the font, install and use! Best of all, it allowed me to use all sizes from 6-48!
This is a dream for non-coders like me.