To Qoute peoples posts use the small red button in the right hand bottom corner of their post saying 'Qoute'.
Quick reply doesn't have all of the different tools on it such as editing Font size etc. but takes a lot less time to construct and submit a post whereas the 'Add Reply' button sends you to a new screen which includes all of the tools available when making a post. It does however take a little longer.
The differences between them though aren't too important, you can still do most things with quick reply.
Anymore questions post them in the 'Technical Feedback' sub-forum in the Fall-In-Heretics forum and I will be happy to help
