I feel better control and get better speed when moving only the fingers, and when moving the arm your are moving too much of your body i think, so you cant get real speed.
The reason that i asked this really is because of i was told the moving the wrist is the right thing to do, if there IS a right thing to do. and i dont know what i need to do, stay with moving the fingers or practice moving the wrist.
Is there some master or guitar teacher here that can give me some advice?