maybe ctrl+tab does something different for you. for me, it just goes to the next tab in the cycle. I want to switch to the previous active view, no matter where it is.
say I have 10 views opened A B C D E F G H I J, I want to switch back and forth between C and H, using the same key binding, b/c very often I'm focused on just 2 files out of the ones I have opened, e.g., I'm copying text from one to the other. I could rearrange the tabs so C and H are next to each other, but I still have to think whether to hit ctrl+tab / ctrrl+pgdn or ctrl+shift+tab / ctrl+pgup. That's more work than I want to do