I'm rocking the carbon copy. Been on the board for quite a while now. One of those pedals I can't see myself swapping out unless it was for something really special like a Timeline.
My favorite was the original ibanez AD9. It adds such a natural warmness to your tone. Mine was stolen years ago. I bought a reissue and they're not the same...
I was going to suggest the Way Huge Supa Puss but since your trying to stay in the $150 I would go with a Aqua Puss. The carbon copy is nice but I think it's a bit to clean for my liking.