What's the difference between the GE Opal 2.0 and the Opal 2.0 Ultra?

Per GE's product pages and the reviewed.com and goodhousekeeping.com write-ups in our signals, both produce up to 38 lbs/day of nugget ice and start producing within roughly 10 minutes. The Ultra adds a scale-inhibiting filter, refreshed styling, and (on some configurations) a larger side tank. Reviewers in the supplied signals describe similar ice quality between them, with the Ultra positioned as the upgrade for hard-water households.