My mom got this calculator for my school work. I didn't need a full scientific calculator that would cost $100+ yet, but I couldn't stick to a kiddie $1 one, either. So, I received this one. When I first used it I loved it's firm feel, unlike most cheap calculators. It has a sliding plastic cover that protects the calculator from anything. It's incredibly durable; I have dropped it on concrete before without any scratches or dents. It's a perfect size: not too big but small enough to fit in your pocket. The battery hasn't run out yet and I've used it for a year, so I guess that's covered as well! It has all the functionalities I could ever use and more, but it's still not quite as good as a scientific calculator: you won't find any graphing on it.
However, this is a great calculator, and unless you need a scientific calculator then get this one.