I have 2 currently: a Neutron from the MVP Circuit and a Soft Neutron from the Space Race. I prefer the Soft Neutron. I find it a bit more OS. In general, they are slightly more stable than an Envy, but not by much. This mold has a nearly identical profile as the non-blue experimental electron molds that came out. One of those molds became the Atom. This one has never officially been revealed as that mold, but it sure looks identical. Either way, if you love the Envy, you might find room for it. It is really close. perhaps .5 more
HSS. What it is not is Zone or Harp OS. It flies smooth. I bag this along with 3 other Envys. I use this one in the OS slots that I need off the tee or for upshots. It flicks really well, just like the Envy.