Honest verdict
ArchiVinci is strong, but not for the same reason as Rendervi.
ArchiVinci is one of the more interesting niche competitors because it clearly understands architecture use cases and offers a lot of modules, from floor plans to relighting and style changes. If you want wide tool coverage and prefer one-time access pricing, it is a credible option. Rendervi is still the better choice when you want a tighter product built around precise render outcomes, cleaner consistency, and a more focused studio experience.