I wanted to try something that looks more traditional so I did my version of Gen. George Washington (a hero of mine!)
A painted look using a 3d model as a base. It went quick, about 2 hours.
The model only took about an hour, if I wanted a new angle or an expression I could do a quick 10 min. tweak and paint it up in an hour or so.
That's faster than I can paint from scratch.