I thought about it a bit more, and my 60/40 lean towards GMing is still true. There is something exhilarating about guiding a game and being surprised about where it goes.

However, that time as a player is critical to help continue to improve my GMing. It gives me a lot of insight into that side of the GM screen and how to try to manage things when I am the GM. Without the periodic playing, I would be much a worse GM.