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
Tomic601,
Thanks, enjoying VA right now. Next stop Boston, then on to Niagara and on to Chicago :-)
You were saying "his amps". What exactly did you mean?
@ja_zz 
Vandersteen has made his own amps for the 7's.
@tomic601 
You are one lucky guy!
I must have that &@$€£¥* ! Italian keyboard also

i just wanted to explain my bias

and yes lucky bastard

Jazz - must be some Quattro stocking Vandy dealers somewhere on your whirlwind USA vacation pathway....
Post removed 
Gentlemen,
Thanx for your support. 
Once I am back home, I have a friend who owns a pair of Quatros AND an amp another friend (an ex- owner of this combo) recommended for them - a Meridian G57. Will audition them both.