I have bought a few smoktech products and they have lost my trust as far as the durability of their mods. They continuously, continuously, put out mods that have design flaws, such as threading that is too thin, or painted over with textured paint, mods that are missing essential features, such as eGo threading on an eGo drip well "look-alike" device, and ridiculous issues that should never be put on the market, such as chromed over contacts, spelling errors in their menus, and occassionally even serious safety issues, such as missing vent holes, and malfunctioning internal batteries. They have a real record of releasing mods that just aren't ready to be released, and then they release new versions of those mods, charging the vendors (and vicariously, us) for the new "editions." They are an irresponsible company. With that said, they have some serious successes that one should take note of. The RSST is one of them. Then again, the RSST was a complete and total copy of someone else's atomizer design, and that made a lot of people very angry. The only eGo battery that has ever broken on me was a smoktech eGo batt. Surprise Surprise.
If I had to choose between these two mods for my only mod, I would probably pick the magneto, only because it seems to be getting good reviews, it doesn't have the design flaws of the 1st few STech mods, its got a magnetic switch, and it is a 22mm mod which means most atomizers will look nice/flush on top of it. Although the magnetic switch did make it a little long for a mod in my own personal opinion. Also, I think the designers were drunk when they decided to include a spider to the end cap, which seems completely unrelated to the name "Magneto" lol.. But I think that about most smoktech mods when they come out. There will probably be a newer version to come out without the ridiculous spider and the smoktech logo. (EDIT- OH, its already out! Look at that, a version 2 already!)
I cannot consciously bash the entire company. I own some of their mods and I've owned a few of their products and I still use them to this day. Smoktech does put out some good products, but you need to be weary before you go and buy one. Make sure everything on your checklist for a good mod is in the smoktech device your buying... Because if you don't, you'll be angry when the version 2 comes out a week after you purchase the version 1.