Hi all, I've been wondering if there is any casio calculator that's similar to Ti-89? This is because I've been using casio calculators all my life and I've tried using Ti but I'm not used to it at all. If there is such casio calculator, do you know what's the difference between both of them (such as its pros and cons)? and which one is better for an engineering student (I'm in electrical engineering major)? Any inputs will be greatly appreciated. :) Thanks!