MH will make Kannabis plants produce more trichomes when compared to a HPS. HPS will increase the yield when compared to MH. HPS 430 watt sunagro gives the best of both worlds according to the manufacturer. A few local growers use a 2 to 1 setup (1 MH for every 2 HPS) for flowering cycle. Where the light spectrum overlaps you can see a difference in yield and trichomes.

Good Kannabis Growing!