Cannatonic was the first high-CBD strain made available to consumers (Resin Seeds out of Spain), but it varies, some have high CBD/THC, some high THC/low CBD, and some high CBD/low THC. To me Hurkle (TGA) represents an advance because every plant is supposed to have high CBD, and that was true for the 3 females I got.
I have a pack of Pennywise from TGA lined up next, a couple friends have grown them and it looks good. I'm all about CBD because of the anti-inflammatory effect for arthritis, it seems to work.
MCR Labs here in Massachusetts is very cool, they give medical patients the volume discount rate, I think it's $30 or $40 per sample for a full cannabinoid profile, but I'm too cheap to pay it. Does it matter? If it relieves your symptoms, that's all you need to know.