Just got the astrostream shipped to Montreal from Kalavida, Silentsport can also order it for you in Canada. The best price is at CKS or 4Corners Riversports if you can order from the US. It is a great river board.
I own the C4 isup, the MCIT and the Astro stream is my favorite. I had a blast running rapids and surfing with it. The fins are quite cheap and lasted one river run so it is a great board to learn running rivers finless
The Astro board is way nicer than the MCIT. My MCIT looks like it will need repair after just one year. I tried both side to side on the rivière La Diable. I do not want to use the MCIT anymore. The C4 isup ia a great board as well with better fins, but since i got the 8' x 30" I use it mostly for surfing, and small rapids. The C4 is a fun surfboard in the sea.