Lufa baskets are an interesting concept, part CSA and part grocery delivery, they merge the best of both. And as a city dweller, apart from the few herbs, tomatoes and peppers I grow on my balcony, its hard to get more local than the produce Lufa grows in their rooftop greenhouses.
Although I belong to a traditional CSA, I also subscribe to Lufa so that I don't have to go without local produce during the months when nothing grows outside. Their pay as you go format, along with being able to indicate multiple "vacation" weeks means I can choose when to get a basket. On top of that, you get to customise the individual items.
Something else great about Lufa is that they have a lot of drop off points, with reasonable pick up times.
Overall Lufa is an excellent service and Montrealers are lucky to be able to take advantage.