Second Hand Classic or New Guy on the Block?

Based in the UK, I am looking to purchase speakers to replace my current JM Lab Mezzo Utopia's. They are fantastic speakers but I need something a little smaller to suit a variety of rooms - I move a lot. What I am thinking about is something like a Sonus Faber Extrema - the Classic - or the Dynaudio Special 25 - the New Guy.

Although I am downsizing I don't want to lose too much bass, hence not looking at the Guarneri or Confidence C1 (to look at the same manufacturers). My present room is 23 x 12 x 11ft, solidly built and either average or slightly on the dead side wrt acoustics. I fire across the 12ft dimension and the Mezzo's work surprisingly well for such a nearfield setup. The rest of my system is:

Sony SCD-777es (transport)
dCS Purcell/Elgar (dac and volume control - non DSD)
Pass Labs X600
Acoustic Zen MC2/Silver Ref/Hologram
JPS power cables

I listen at medium levels, certainly not thunderous, music tastes from choral and symphonic through to rock, majoring on female vocalists such as Tori Amos. Want a wide, deep soundstage (don't we all?), with the speakers doing the famous disappearing act.

Would appreciate feedback on these speakers and also suggestions for alternatives. Budget is not really an issue.

Cheers guys,

Colinh