Wow, thanks for the reply guys and thanks for the link CA. Im still not 100% clear but I tend to agree with Jerry as regards to the spice blends. Most of the recipes that I have seen on here tend not to include garam masala whereby the recipes that I have do as it makes up part of what they call the 'base spice'. Also, the 'base sauce' or curry gravy if you prefer has quite a lot of ingredients in it like, mace, cassia bark, cloves, green cardamom, star anise, bay leaf and your usual veg, carrots onions, red & green peppers. In making this, you have to cook a tomato mixture seperatley which I believe is called a 'tarka' Once both are cooked, you simply mix them together and wizz it up, and you have your base.
The one thing that I would say, is that every recipe that I have tride from the book looks very similar in colour which I am sure is down to the base sauce. The consistancy is also very similar, again I belive this to be down to the base, as it is quite thick. In my experience, most curries differ in colour slightly, I really hope that this is not down to food colouring!
I am going to be buying Kris Dhillons 'The curry secret this week which I believe is more about BIR's rather than Balti, so hopefully, I can compare the difference and somehow answer my own question.
Once again, thanks for the replys and keep up the great work with this site,
many thanks,
Ray