I've heard both, in my opinion the Cremona is the better sounding speaker, particularly at mid and lower volume levels. The SF's are warmer and softer sounding, should make them easier to match with other gear, built quality is also beyond reproach. If it's important to you to rock out the S8 may be the better way to go. Don't think you'd be disappointed with either.
Good luck and have fun Tim
Good luck and have fun Tim