How do you know which marketing channel is worth your time?

There are so many ways to grow a SaaS product

SEO, social media, paid ads, communities, cold outreach, and partnerships

Trying all of them at once can spread your time and budget too thin

But focusing on the wrong channel for months can be just as frustrating

I think the goal is to find a channel that brings the right people consistently, not just traffic that looks good in analytics

For SaaS founders and makers, which channel has brought you the most valuable users so far?