Yes, Tokyo is an amazing city, and there are so many brilliant music stores... Even the mainstream-ish ones always have some great stuff in stock.
And the live music scene is the best...
I went there for a few months last year to work on a documentary focusing on the noise/exp/improv scene.
If anyone's in Paris on June 27th, the premiere is happening at La Maison de la culture du Japon.
See the trailer here...