Which HP for my "twenty buck shootout"?

[rprosperi]

I agree with Max. You can compare top-of-line non-graphing models, or top-of-line under $20 models.

There will be many minor differences between the latter, but the former will reveal that HP provides a wider range of models in the non-graphing category. Not necessarily more models, but models with a wider range of features, for example the 35S. It will also show the HP model is the most expensive, while providing more, but that's probably not news to anyone.

Maybe include both the 300S+ and the 35S, to see all aspects of the comparison.

I look forward to your review, I honestly don't know too much about the other machines.