um. use it? lol.
methylstenbolone is m-sten, right? I ran it awhile back. i didn't have much of it, but i remember liking it quite a bit. If I remember correctly, a lot of the m sten products had an issue with stability. Like, they would convert to dmz, or just be dmz. I could be confusing it with another compound, but I think I'm right. It would be google-able. In any event, dmz is a decent compound too, so you can't really go wrong with it. DMZ makes me feel a little sick and kills my appetite, whereas legit m sten did not. Yogi also really liked M sten.
honestly, i just use all orals essentially the same way. Run them, see if I like them, see how i feel on them and how they affect my strength and physique. aside from like halo or superdrol, 6 weeks is enough time to run anything as a test. And several orals like anavar or dbol i would run much longer.