Melodyne, Difference between Cre8 & Plugin Options

[redstrype]

I have a melodyne question for anyone who has the software, what's the main difference between Melodyne Plugin and Melodyne Cre8?I've been messing around with the demo and noticed a few things, are you able to copy a sequence of notes and drag them to a different octave in the plugin version to achieve a choir effect? Is that the main difference? What do people suggest buying?

Thinking about purchasing and any thoughts would be greatly appreciated.

Thanks
-Strype