Superb, guaranteed. Trust me I've tried lots. This is the absolute number one.
In total, it is a very good and useful product. 3D player makers really did a very good job. I think they should add some more features in 3D video converter like "Editing the video" to be converted etc. This makes the converter much more popular than it is now. I also wish to see another product from them which has combination of both player and converter.