Instruct: Classify a given review into positive or negative sentiment.
Query: Worth the difference in price from the original

I have both the original 12C and the Platinum. The Platinum calculates much quicker than the original and is more user friendly (including a simple back space feature so you don't have to clear the entire field and retype if you accidently press a number twice). I find the keys and the display are easier to read, as well.Depending on your financial situation, you may not want to buy it if you have a functional 12C, but if you are choosing between the two, definitely spend the few extra dollars and get the Platinum.