Dont worry, the difference between a graphire and an intuos isnt that extreme. The biggest difference is in how the 2 respond to a light touch. But that isn't something you need to worry about too much for something like hair. The graphire is an excellent tablet otherwise, i used one for years before getting an intuos.

Plus if this is your first tablet then you definitely want the cheapest one you can get (wacom of course) cause the fact is not everyone is able to adapt to using a tablet. It requires a certain sort of hand-eye approach to drawing that some artists find very hard to master. Best to try with a cheaper model first (or even a borrowed one if you can) You can always save for the better models if you need to.