NuFACE Trinity+ has more clinical evidence, a larger user community, and costs $170 less. The results are real when used consistently (5x per week for the first 60 days). Ziip Halo's nano-current approach has merit and the app-guided programs are genuinely useful, but at $495 it's harder to justify over the proven Trinity+. Start with NuFACE; upgrade if you want Ziip's nuance.