The original, cheapest Ingress is indeed a Symposium Jr. imitation. The higher priced Ingress are a very different story. Larger diameter bowl with a shallower slope for the ball bearing to climb (that climb the most important isolation design element of the roller bearing), 7075 aluminum in place of the softer 6061 used by Symposium (harder and smoother), and superior polishing. State-Of-The-Art in roller bearings imo. I have the cheap ones (double cup design) and the more expensive ones (single cup, with a stainless steel disc on the bottom of the component for the ball bearing to roll on), as well as a couple sets of the Symposium Jr's. They're all good. Still need a spring though, as roller bearings do not isolate in the vertical plane.
And then there is the Townshend Audio Seismic Pod!
