At what rank should someone purchase a heavy weight gi?

[armanox]

Put me in the "it's up to what you want" crowd. I usually wear either my heavyweight Gi or a Judo Gi, for a couple of years now. They just hold up so much better (ripped my first gi (light) being thrown, haven't been happy with the middle weight ones).

As far as black belt, I'm still working to get their (just passed the eight years mark!).