Can't say about "flat" but the Cantons that I've been listening to have been very neutral and clear sounding. Very good imaging. Before you give out any money on a list of speakers that don't seem to have impressed you I would recommend using patience and waiting before buying and listening to some Cantons, especially as you are in Europe and there are many different Cantons to be found here.
Cheers,
James
Cheers,
James