I have auditioned both. I was never a fan of B&W but now I can say that the 805S are very fine speakers.
The SF are very nice speakers as well, but if you want a truer sound to the source, B&W805s are a better choice. Yes, they can sound more analytical but not because of the speakers themselves but the associated equipment. The 805S are more neutral than the SF, and are also more revealing, so if you give them anaytical equipment, that's how they will sound. If you give them high quality musical components, they will deliver the music.
Goatwuss is right, SF will make your worse recordings sound better, more pleasant, what you and many others may prefer in the end over the B&Ws. But the 805S can really shine with great equipment and good recordings.
Jov
The SF are very nice speakers as well, but if you want a truer sound to the source, B&W805s are a better choice. Yes, they can sound more analytical but not because of the speakers themselves but the associated equipment. The 805S are more neutral than the SF, and are also more revealing, so if you give them anaytical equipment, that's how they will sound. If you give them high quality musical components, they will deliver the music.
Goatwuss is right, SF will make your worse recordings sound better, more pleasant, what you and many others may prefer in the end over the B&Ws. But the 805S can really shine with great equipment and good recordings.
Jov