I regularly order drugs from the darknet and it's generally working out well for me. I didn't purchase any drugs with the intend to kill myself because I already own Nembutal. Before I stumbled upon N, I planned to leave with Fentanyl. But I dropped this method completely because it doesn't quite compare with Nembutal.
Dark.fail is basically the to-go place for information about the markets right now. It's technically a small wiki and it helps you to navigate around.
I personally recommend Empire. I'd go for that one, seems to be the fastest growing market after Dream And WallSt went down. And the vendors are reliable, from my experience. The current market situation is a little bit messy at the moment and it's difficult to find legit mirrors but with the wiki I've linked, you should be able to find something. I wish you luck.