People seem to have Vortex high on their Top 10's (well people that have only ridden PCW coasters) but I don't think it's that great. To be honest, Canada has no great coasters but the flats are really cool.
My favorite coaster would be Wild Beast though it still beats you up (there was some crazy 'jack-hammering' at the bottom of the first drop. It looked like they tried to fix it but then the top of the lift hill was warped )