While each of these three Atari font managers have different capabilities, I thought I would test and report on their comparative speeds. While this is a very unscientific set of tests, they should give you an idea of their performance on the same test bed. Namely Atari STeem Emulator running with 8MHz & 4K memory. Once you've seen the speed results, you may want to investigate their other features and then decide which combination interests you the most.
For complete instructions and a walkthrough
watch the video below