I just got mine, arrived a day early. So, the negatives are that it is entirely plastic. Nothing on the reactor or the base is diecast metal. The other thing is it doesn't come with batteries and it requires three watch batteries. So I haven't gotten to power it on yet. The power button is actually a capacitive touch button, which is neat. Apparently it has two modes: a solid light and pulsating light.
The level of detail far exceeds that of either the Cattoys or SalesOne versions. It does look really nice despite not being metal. The display stand requires a little bit of screw assembly. The magnets are pretty strong, so it'll stay in place. It comes with a necklace chain for optional added security.