Cooking for Engineers has a decent comprehensive section on curry.
People who love curry will argue which curry is better/best.
I've become accustomed to West Indian Curries (which are not listed by Cooking for Engineers) but, only because my husband, (being of West Indian descent) prefers West Indian curries. Trinidadian or Guyanese curries, preferred.
Check back this weekend for a visual recipe for West African Peanut Curried Chicken, using Guyanese or Trinidadian curry.