What channels bring the highest ROI?

[WobrGraboid]

In your experience, which marketing channels consistently deliver the best return on investment, and why do you think that is?

[McLeBron]

In my experience, the channels that bring the highest ROI tend to shift depending on timing, audience mood, and even minor changes in strategy. One month it's organic, next it's email. I was checking some insights recently on the amasty site, and it struck me how small optimizations can make a huge difference. It's less about the "best" channel and more about how well we use each one in the bigger picture.