Forms the perfect one for me.
I have a lot of forms to create for my customers (on daily basis) and I
needed a real time savier here. This component turned out to be the
quickest one of all. It is about all the small things like the real
handy and fast copy function (right click, copy, right click, paste),
the clean overview and the great looking results. if you know some css,
you will be able to create your own nice themes.
I didn't really test the other two modes but I guess they are great as
well, the quick mode alone is worth it all anyway.
Congratulations to the developers, awesome job!