I've got both, and I use the lite more than the feather lite, because I do more raw edge applique than I do turned edge.
The feather lite version is great for turned edge applique and for lighter fabrics like lawn.
When doing turned edge applique, the stabilizer gets "doubled" when it's folded under, so there is an extra layer to think about. It doesn't really make that much difference to me, but you might want to test a small applique before committing to a whole project. See what you like best.
Also, an alternative I like is washable stick glue. And you could try freezer paper too. Then just remove it...no hard edges that way.
have fun!
