Well, this August I will be an incoming freshman at college. I placed out of calculus 1 and 2, and will be starting with multivariable calculus, and then differential equations. I am well aware that professors do not allow the use of calculators on exams, but would still like to have one for myself. Should I get the Ti-89 (regular or titanium, only difference is memory), or the HP49G+? I am asking this, because a lot of people have recently told me that the HP is better than the Ti, whereas I am used to using a Ti-89. Thanks in advance. I would prefer answers given to have an explanation, and someone with experience with both would be ideal.