Never heard of this lot before, but they're doing 'club' returns to Canada for less than 1200 quid (before end of April). Are they just a low end carrier, or a real airline? Does club mean anything more than not being spat on by the staff?
I've flown in Y with Air Transat twice to Canada. They're not bad. Their 'club' offering would be akin to PE (maybe) - separated cabin, bigger more comfortable seat, better meals (and I understand it's on china) and that's about it. Usually only about 20 seats in the cabin.
As I said, my experience is in Y and they were okay, nothing special but okay.