I'm starting college in a couple months now, and I would like to know which calculator I should get. I heard TI-92+ is nice, but unrealistic as many teachers won't let you use them on tests. 89's are a good alternative, but I have heard that HP's are better. Right now I own a HP48gx. I'm majoring in engineering, and perhaps a double major in physics, but I'm not positive yet. All I want to know is if I should get another calculator, such as a TI, or not.