Hi,
I can't believe you asked this. Hahaha...Just kidding friend. I will try to do the best I can in a short little words I speak to you.
Shantibaba a driving force behind MNS that is here. He used to work for the Greenhouse as a breeder. I am unsure of my exact years, but I don't believe it was much longer after the triple crown he left. He had a disagreement with the owner. As far as I know he didn't leave the breeding stock with Arjan of GH. Now Arjan says, or claims he still has the same stock. You could buy some GH seeds, and MNS seeds, and you'll find out what Shanti says. Quote from Shanti..."The Proof is in the seed." I have never dealt with Arjan to be fair. Yet I feel the proof is not just in the seed. The customer service received from Shanti in my case goes back many years before this site existed, and to say the least I am happy.
Now saying that. There are people who have enjoyed GH seeds, and there are many that feel good vibes from MNS also. So in the end. It is up to you to research, and check into the histories, and complaints to each company. As well as the good to both if it exists.
Myself I am quite impartial to MNS, and won't lie about that. I feel MNS has anything I need, and I don't wan't no feminized seed. I have tried in the past, and results were ok, but I chose only that one time as it was gifted to me. Do some simple research into the GH, and MNS. You can take my word for it. I believe you'll be back here to buy your SSH seeds. Good luck with what you choose...Ns