I LOOOOVE the Foursquare jacket I have right now. It's an L and I'm 6"5 (yes, that's tall) and it fits perfectly. Long enough. VERY good waterproofing.
If this would be the same model, I'd buy it as a backup for when my jacket finally dies (which will probably be a long, seeing how good it looks. And that after 150+ days on snow as well as regular use as normal jacket).