Hi North, welcome to the forums! First off, no animation app has an inherent stylistic "look" to the work created in it. It's pretty much up to the artist/animator to determine a style, as with any art medium.
Second, if you're new to 3D animation in general, getting something like a 25-minute animation done "fast" is not possible. But in my experience A:M has the best toolset and workflow of any of the ones I've used. Don't know about C4D but for a $79 1 year subscription you can find out for yourself if A:M is a worthwhile app to learn. And the people here on the forum are a bodacious support group!
Stick around, keep asking questions.