I think 20-25% off you get from greenmangaming is worth more then Symphonia which is based in the PS3 port (i.e. PS2 port). I am probably going to skip this one till after release as there are too many games on the plate and I have some bad vibes about this port for some reason.
Buy it from someone with the Norwegian steam store instead. Around 40$, region free, has all them preorder bonuses.
And the port is going to turn out fine, I'd say.