<p>I’ve heard the TI-83+ is better as opposed to the TI-89 for Stats since it’s the one most teachers and books expect.</p>
<p>TI-89 is better for calculus, but you run the risk of growing dependent on it and having a calculator that isn’t allowed in certain college courses. The TI-83+ will work just fine for calculus: it’s just a bit less convenient for checking your answers and such.</p>
<p>I’d say go for the TI-83+ (or apparently the TI-84 if it really is the same thing).</p>