I can honestly say that this plugin has by far increased my productivity than any other. I just don't have to spend the time debugging script conflicts, I can get on with what I should be doing, developing sites.
The documentation on the site is good, and I would recommend people read it, as you will need to use the advanced options if you have a decent amount of plugins on a site.
I cannot comment on support as I've not had to use it.
With new jQuery libraries and plugin coming out all the time, I encourage the developers to continue to keep this plugin up-to-date as it is truly a huge productivity tool.
Wow. Thank you very much for giving this plugin such an 'in-depth' review. This feedback is important and really well appreciated. It shows it has been able to reach its target! Thank you!