What are the advantages and disadvantages of a lower kv motor vs. a high kv motor for a mini quad. For instance, the Cobra 2204s come in 1960kv and 2300kv. I thought everyone was leaning towards 2000+kv, but then I saw that Charpu uses 1960kv Cobras in the latest FT episode. Are lower kv motors more efficient in producing thrust and higher kv motors better for raw speed? I get confused when it comes to motor specs and performance beyond the prop test tables.