Finally, moving back and forth between models, views and controllers is just too distracting and time consuming. I had to find another way to navigate my way between codes. I tweeted asking about alternative IDEs in Mac OS X to achieve this. Turns out there is a way!
I did a Google search and was happy to read a blog post here. But it didn't work (again). The instructions was to copy paste lines of comments directly to the
system/core/Model.php. The thing is, my system folder is outside the public folder. So I copy pasted the Controller part to
application/core/MY_Controller.php. It WORKED!
Now I'm happy with a new IDE and Code hinting + Autocompletion!