Shahinian Obelisk vs VandersteenTreo


HI fellow ’goners.
I own the Shahinians, thinking of upgrading to the Treos. The Obelisks sound a little smallish for the room... And the room is not square, it's a big living area of a house, with access to the second floor's roof. 
Will this be an upgrade or just a sideward move?
Room approx 60m2, driven by Musical Fidelity A5.5, 250wpc at 8Ohm (thinking of replacing this one too).
Mostly jazz and acoustic music, less frequently - classical and pop.
Thanks!

ja_zz
Re amps:
Atma-Sphere MA-1's with MP-3- Total knock out of the park
I will be setting up my Ayre MXR (non Twenties) and a recently upgraded pair of McCormack DNA-1's that Steve was challenged to give the Atma's a run for the money.
Sound Anchors just delivered my amp stands, so once things are put together it is off to the races....
@ja_zz 
When you get your Quatro's repaired, I think you might be considering other speakers for back up.
Bob
gdnr.....leave the mxr on ! they take quite a bit to really warm up and bloom

but i can assure you they are very very good
i first heard them driving model 7 at RV’s
Bob,
On top of Shahinians I have a pair of open-baffle speakers of local make (Noize Fabrik) and KEF LS50s.
But... I don’t like the idea of backup speakers. Might give the main pair the idea that they r entitled to a vacation :-)
http://roshiend.ru/audiotech-page/noize-fabrik-scutum-3-0/

Here’s a link to one of my speakers.
They are extraordinary, BUT they need the right room to play well. In my room they don’t work, unfortunately. No bass.

that link takes me right to Manaforts lawyer.... just kidding
i like your attitudes about not  having an understudy visible and yet waiting in the wings... so i have a vintage room system where i keep the backups - its really is a work room....