My verdict: Typeform killer, and it's free.
Tally got it all right: beautiful, powerful, and free forms. The Notion-like interface makes creation intuitive and conditional logic works well. Hard to justify paying for Typeform when Tally does the job for free. The free plan covers 99% of needs with unlimited forms and responses. Pro at $29/month only adds white label and a few niche features.
What I like less: advanced features limited vs Typeform, fewer templates available, Tally branding on the free tier, support less responsive than paid tools.
My advice: start with Tally for everything. If you reach its limits (rare), you can always migrate to Typeform.