Make sure you listen at the right volume for your habits. Listening very loud or too softly may prejudice you one way or another. The B&W’s prefer to be listened below the tweeter axis so this can also impact what you’ve heard.
A very personal opinion is that the SF is much smoother and better balanced speaker than the B&W with a wider sweet spot. If that’s what you heard in the store you are not wrong.
If you use either with a sub consider plugging the ports as you’ll get lower distortion and sub matching.