Was wondering what is the most effective/fast way to subdivide the cone to make the subsurf modifier work properly?
There are many ways to do it I guess. Here's mine: After adding a cone set it's base fill type to triangle fan. Select the lower edge and press Ctrl+B to bevel it and scroll the mouse to add two additional edges. Change the mode to Percent (press M tree times) and place the edges very near to each other. Next select the very upper edge and place it on top of the cone pressing G twice. Add a subsurf modifier.