Originally Posted by Aswin
Both are great control panels and have almost all features available in plesk same as in cPanel. The price is less for Plesk is the only difference. Also, the user interface is not similar. If you are already using cPanel and you may experience little bit difficulty when you switch to plesk, for example the SSL installation.
I heard elsewhere that Plesk was recently hiked up to ~47% or something from their previous pricing scheme to all of their licensing products.