I've spent years crafting ad copy and briefs, but lately I've been seeing these AI ad tools popping up everywhere. RunwayML, Kubflow, Krea, Figma Weavy, Higgsfield - the list goes on. genuinely curious if anyone here has actually used them and seen solid results. Not looking for UGC-style ads necessarily, more like mini video ads. Which platform actually delivered? and why did you choose it over the others? any honest feedback would be brilliant