Sounds like there will be no Phantom 377s sold in Canada!!
I'll post my opinions as soon as I get my hands on one - probably December
I must admit that volume isn't everything. I was (at 90kg) quite competitive on my 250 litre Fanatic Mega Cat in the light winds - even against sailors on the Phantom 380. Technique & sail selection/tuning have a large part to play in performance.
Board fragility is definitely an issue. Any racing board made of carbon tends to be fragile and needs to be handled very carefully. The old boards were certainly very hardy - most of the boards in our fleet are still going strong 20 years+ down the track. The most recent of the old boards (e.g. AHD & F2 380) are quite fragile - not many of these left in my area.
How many raceboards are you getting to your races? Our season starts in a week's time - can't wait.