When I started using 99designs for my shirt company I worked with several different artists depending on the style I needed.
Luckily one of those designers was 80Kien. This artist is one of the most versatile designers I have ever worked with. I have challenged him with everything from cartoony to super detailed, and everything in between.
Over the past two years I have only used 80Kein not just because of their talent but also his professionalism, reliability, and speed.
It is important to note that if you want the same experience, I had with 80Kein with over 20 projects you must take a hands-on approach.
Provide a clear brief with a lot of examples and be available to provide feedback and guidance throughout the process. If you do that, I am confident you have your own great experience!