Scansonic mb3.5 vs mb5b

I am a Scansonic Dealer and am happy to help.  PM me if you want to discuss prices. 

The MB 3.5B and MB 5B are fundamentally different designs and several factors are accounted for in the price.  The 3.5B has two, side firing 6.5" aluminum drivers while the 5B has two 4.5" carbon fiber bass drivers.  

Few things -
-The CF drivers are much pricier than the aluminum drivers.  This is a practical incremental cost  
- The cabinet on the 5B is both taller and deeper than the 3.5B.  Even small changes can have an impact due incremental material costs and challenges in machining.  I can do a 15" x 7" x 11" cabinet that is half the price of an 11'' x  11" x 11" due to raw material sizes and how they lay out.  
- R&D costs.  The front firing designs getting achieving a 2 hz difference in bass response with 4.5" drivers vs 6.5" drivers is nothing short of miraculous.  I am certain that was not easy and took a LOT of time to get right which has to be recouped.  
 
In terms of performance - In practice, these speakers are best with 9' of space between them.  The 3.5Bs require a minimum of 4' in incremental space to either side.  This means the smallest room they work in is 17' and 20' is better.  The 5Bs can be place right effectively against the wall and be just fine so an 11' wide room is fine.  

Finally, the bass, although not as deep, is going to be a bit more refined with the 5Bs.  

I asked Raidho this question.  Pricing differential is driven by higher end drivers and larger cabinet.  FYI...everything from Raidho is made to order. 

They shut down for summer vacation from July 10th to August 3rd.  If you want speakers before August, we might be able to squeeze it in under the wire.  

Thanks verdantaudio for the very informative reply. Based on everything you said it makes sense why the mb5b would be more costly than the mb 3.5b. As it is, cost wise the 3.5 would make more sense as I would just be experimenting with the scansonic brand. But based on what u said its possible the mb5b would be a better fit in my current environment. Basically the room is roughly 20' wide and 15' deep w 8' ceiling. The only problem I have w the mb5 over the 3.5 is its a bit taller. 2 inches might not seem like a lot, but when it comes to tight spaces too much can be too much, if u catch my meaning ;)
Anyways, all that aside, at the moment I'm sporting Dynaudio C1 platinum for the front L & R. For their size the bass is astounding, and transparency is better than anything I've ever heard in my life.. period. Price wise I know the comparison is a bit skewed, but I still fear I'd be missing out on transparency and detail. Alas, the new Dynaudio Confidence 30 is thousands of dollars more costly than either scansonic model i originally inquired about. Im just wondering if I'd be content with any of the smaller floor standing models from scansonic or if id be disappointed in respect to my current Dynaudio C1 Platinums.