So I have run almost their entire product line for a few grows now and can say that I am fairly impressed. I have not used any of their newer stuff though. My yields have been decent quality and the density of my flowers has been top notch. I have had no issues with pests or problems.
I was in today talking with both sales reps and it looks like Diablo has become a solid player in the industry and that they're producing products that are Health Canada approved. This is a great thing, especially with pending legalization.
All in all, I like running Diablo. I seem to have it dialed in pretty good and it is easy enough to use. I average about an ounce per plant under a 600 hps and run approximately 1000-1200 ppm during flower. Strains grown have been Kushberry, Blueberry, Skunkberry and Sweet C99 from Peak Seeds BC in Nanaimo.