I'm a big fan of all the CCK's as they have their cool features and advantages.I'm interested in K2 but would like to hear some feedback on the advantages of K2 over FlexiContent & FlexiAcess for government/school district websites where there are a lot of categories, articles and you have to have special access for different members/groups to only be able to manage their own specific categories.I've noticed FlexiContent to slow down Joomla websites but love the features. Does K2 have the same time of Access Control for users and groups to restrict them to their own categories of the website to manage?Any and all feedback is appreciated!