If you're looking for pieces to add to your Neutron, it's okay. But if you remove the Neutron, you're pretty limited.

If you're going to buy a Disting, get the EX. It has more features and a better display. It can also do the work of two of the Mk4 Distings in most cases. A small submixer that can also handle DC would be nice. Rings, Filter 8, and the Disting can all act as oscillators and you might want to combine them or some CV in a patch.