I was restricted to non-programmable calculator models for Chem and MicroBi classes.  I ordered this one at the beginning of the semester about 4 months ago and I still don't know all the functions but it has worked fine.  The display is easy to read, even under those horrible flourescent lights in the classroom and the sliding cover that protects the display and the keys fits securely and doesn't get knocked off in my very full backpack.  I'd recommend it.