Well windows alt-tab is good when you don't have many windows and have to switch back and forth between 2 windows -- it's probably the quickest way. However, when you have multiple windows of the same app (e.g. : text editor, word processor with multiple documents/scripts/code opened all at once) it's close to useless. Farr alt tab becomes handy there. Like you, I have created a separate hotkey (ctrl alt tab) for it (with "tab" enabled by default). I actually use 4 ways of switching between apps, depending on my needs : plain alt tab, TaskSwitcher, farr alt tab, and... the task bar (once in a while).