The suite of Calf plugins are really good and cover a lot of these bread and butter effects, pretty low CPU cost in my experience. I think the site to dl is on the Plugin thread somewhere.
So i try the Calf plugins and they are really great and working greatly but i have a serious issue, when i save my project then load it after shut off/on some plugins seems to dont load properly and that make some audio tracks been totally muted even when i delete the plugin.
Even when i save the full DSP set before the Isla is off then try to load the save file that make the issue.