How about the original understanding based on the original teaching of the Gospel.

Here are two articles, one on Free will and predestination
the other on Free will and determinism.
The second one is actually a debate, I believe from a forum with an Orthdox Priest and a Calvinist. So you should see th comparison easily.

http://www.orthodoxinfo.com/inquirers/exact_freewill.aspx

http://www.orthodoxinfo.com/inquirers/freewill.aspx