Dynaudio Focus 140 vs Sonus Faber Signum


Hi, I'm being offered to change my Focus 140 for a SF Signum. Would It be a good deal?
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Thanks for your reply. The Focus are my primary speakers actually so I know them well. 

My other components are a Plinius 9100 integrated amp (which match very well with de Dynaudios) and I use Supra Sword 3.0 speaker cables.

I don't think I'll be able to listen to the Sonus Faber before I buy them, that's why I am asking. I've read their bass isn't as good as their mids and highs, and this is what makes me doubt.
Are you able to audition the Focus 140 in your room?  It might down to personal preference and how well they match with your other components.  I've had the Signums for almost 20 years, they are amazing speakers.  I have not heard Dynaudio speakers so I'm interested in what you find if you are able to compare them.