[sudowhodoido]

The 35S is buggy as hell, poorly designed, the battery lasts too little time and the keys break easily. I owned one and regretted the purchase (I went through an "own every calculator phase")

This is the best thing on the market at the moment in the same form factor: http://www.edu.casio.com/products/Calculators_%26_Dictionari...

If you want programmable then there's (but you have to import it): http://www.casio-intl.com/asia-mea/en/calc/scientific/progra...

TI89 for me though.

[vram22]

>I went through an "own every calculator phase"

That could be an interesting HN or blog post if you wanted to do it. I'm a bit of a calculator fan myself, though I haven't used many different models. There's something about physical products, even though virtual ones are more flexible / configurable, being software.