SF EXTREMA vs SF Cremona M


Hi friends,
Need your honest advise. Someone offering to SWAP his SF Cremona M to my SF Extrema. Kinda tempted bec Cremona M has newer/modern look. Is Straight Swap a good deal? Or are the Extremas becoming a collector piece? Or should he offer to add cash? Your early advise will be much appreciated. The person is kinda giving me few days only to think about this dilema.
Regards to All.
angelo_yap
I got another offer to swap SF Elipsa to the SF Extrema then I have to add cash. Is that an upgrade? If yes; how much should I add? Hope to get more advise ... thank you
The common denominator here is that SF enthusiasts want your Extremas and are willing to trade current models to get them. I'd be very cautious about giving them up.

I've heard the Cremona Ms and love them, but based on what I've read, the Extremas have almost another octave of bass extension.
There's someone on Audiogon right now selling the Extremas for 9250$. He's definitely overcharging, but you can see their worth.
http://app.audiogon.com/listings/full-range-sonus-faber-extrema-with-stands-shipping-cartons-beautiful-2013-01-25-speakers-37876-sevierville-tn
Still considering the Elipsa, Extrema option. Cremona is out. Thank you. Hope to gather more advise.