I didn't like it at all, I instantly switched to swiftboard my much preferred keyboard. Samsung board is something each individual should try out, but if you are already comfortable with a certain board download that instead.
I'm always disappointed by Samsung's keyboard and end up going back to Gboard. Each time Samsung's is updated I give it a go but always end up with Gboard. The one thing I do like is the S-Pen integration, especially filling out forms etc. directly on the field.
I personally enjoy using it, pretty big feature set and good suggestions. I also use keys cafe good lock module to customise it and give it a nice bouncing animation each time I press a key.
