I agree its been a while since Meph released any really new varieties, apparently there is some in the works. However, with this latest Illuminauto release there was #57 Blood Orange Haze - purple pheno - It is an F5 Based on...
I would love to explore this some more as traditionally a PK boost is used earlier in the flower cycle and sweetener type products are used near the end of flower to gain weight and improve terps. I could see NOT using both at the same time however their ratios and ingredients are different so...