I'd pick 'Strong MVP' - getting the product right first has saved us from costly reworks later. What are your thoughts on 'iterate in parallel'?

We tried building a large user base first and found it tough to retain them when the product wasn't fully polished. Did you consider the risks of either approach?

I'd love to see more context on what you're building - is it a consumer product or B2B? That might sway my vote, but initially I'd pick 'Strong MVP'