I don't like quick reply: I have it enabled on my dev site just so I can edit it for the people who do use it.
I don't like it because it screws up the reply tracking. If you take a look at a post on my site you can clearly see who a reply is from. For example:
[In response to Fortch post #68748]
The post number is a hyperlink to Fortch's post. Quick reply tags the last poster as the one you are replying to, but if that isn't the person the reply is intended for the reply tracking is hosed...
Edit: I just noticed the java script in the showflat.tmpl file is tere specificly to keep post tracking in order -so I've enabled it on my main site
