I started using AN pH Perfect Connoisseur Coco Bloom A&B when it came out a few years ago. Before that I used the regular/non-coco version. I can't compare it vs. the Sensi product line.
I don't recall ever seeing and can't say anything negative about AN pH Perfect Connoisseur Coco or the Connoisseur regular version. As I noted, the coco (cal-mag supplement included) part worked for me. For the few $ difference, why not go with the upscale Connoisseur (claims to be better, and I'm confident it is) vs. the mainstream/hydro shops' Sensi product line? [But again, I suggest giving new 2-part MegaCrop serious consideration too].
Yh I’ve heard the connoisseur line is quite good, but they don’t recommend it for beginners. So I’ll have too look into why that’s the case
thanks