The core extension is free, what were they thinking? Free? Open Source project management doesn't get any better than that. In fact I used to be 'afraid' of project management but not any more.
It just works - installed without issue, configured in just 10 minutes, integrated into my site with Registered users in 5 minutes.
The user interface is well thought out and constructed it is logical in its simplicity.
On my site with the template I am using ProjectFork looks great with no tweaks required.
Highly recommended to anyone who is thinking of using or providing project management tools to their Joomla! site.
Setting up the system can be quite detailed but that depends on the level and type of support you wish to offer.
Support from the Developers is excellent. Well done and highly recommended.
J-Cook pro has allowed me to design and develop a full blown Joomla! 1.7 Component, all tables, views, and more in days as opposed to weeks or months doing this manually. The product is feature rich and is being improved and added to all the time.
Do yourself a favor, if you need to build a Joomla! 1.7 (or 1.5) Component then you can do no wrong in trying the product for free at first - then sign up for a plan. You will save on time and effort while being able to deliver your project on time.
J-Cook pro does the hard work for you, you then have the freedom to fully customise the end result for your own needs.
One word: Awesome.