I've ordered their seeds for a few years. I can say from the top they've always come through with orders from their related seedbank and so on the business and service side they are very legit. (More corporation than guy in his shed)
My take on them as a breeder, after growing a bunch of their strains, is that their seeds are great quality, grow like the descriptions and have been some of the most reliable plants I've grown. A couple of my favorite where their seeds. However, they don't say where their strains come from or how they are developed.
So, they lack a bit of the cool factor or if someone is after a rare cut of a specific hyped strain. My guess, and it's just a guess based on growing them is that I think the strains are likely a decent representation or honest effort of the original strain (whether bxs or s1s of the real plant or re-crossed replicas) and bred enough to be fairly stable. The prices are reasonable too.
I think with the way seeds and breeding goes you never really know what you'll end up with and Canuk sits as a good option I like to have sometimes to try different strains, without always having to plunk down lots of money (which I still do now and again to mixed results)
