Ricta speed rings are great! I imagine they’re the same as the chrome cores... just not chrome. Hard and fast. Ricta naturals weren’t bad either.
The Speed Rings were great, but hit or miss with flat spots.
Crystals were really good, a bit on the softer/slower side but held up really well.
The Chrome Cores were HARD, the cores were hard ass plastic, and they were pretty chalky. The speed rings were much more forgiving (and seemingly last longer on the NRG shit...unless placebo).
Been tempted to try some gumballs.