Angst is just internal conflict, I always preferred external conflict, I'm not good enough with the internal stuff. I also like bad people doing bad things and being quite happy about it, its always good to have a fluffy massacre than an angsty one. The thing is I love revenge, but I dislike angst, it makes it very hard to right.
As for a ratio of angst to fluff? I couldn't declare it. Personally I do adventure before romance which removes the fluff a lot and I prefer external to internal conflict which peels away the angst leaving me with a story that's primarily neither.