This is quite the debate. Chicken breasts are absolutely perfect for things like chicken pot pie but I gotta give thighs the benefit for butter chicken. I guess I must concede that thighs do have a tad more flavour...and when you are marinating them in a yogurt and spice mixture they really do work.
The spices that you use here include cumin, turmeric, coriander and lot's of fresh garlic and ginger. It is a wonderful dinner because you can make the marinade early in the day and let the chicken soak up all of the wonderful flavours. Make some basmati rice, heat up some naan bread, always a hit and blanch a little broccoli for some colour.