Vick, GAS isn't really an issue of camera gear, it's really a symptom of our culture.
I read the following in an RFF member's signature and if you give it some thought, you'll find the cure to your GAS. All of us would!
The man once told The Buddha, “I want happiness”.
The Buddha replied, “First remove ‘I’, that’s ego.
Than remove ‘want’, that’s desire.
And now all you are left with is Happiness.