I am the developer of HoudahSpot. So I am biased on that subject.
I bought the bundle myself for Camtasia and Fantastical. And I love both.
What's more: I tried CleanMyMac and it indeed did find quite some stuff to clean out.
And I have stashed the fonts for later use.
I really like Camtasia. I previously used ScreenFlow, but I could not justify the latest upgrade fee.
Turns out Camtasia can do quite a bit more than ScreenFlow and is rather easier to use.
I might finally get around to making some screencasts.