TI-83/84 are good calculators - even here at HP you see a lot of them although the enlightened insist on RPN. I think a large part of the success is that high-

TI-83/84 are good calculators - even here at HP you see a lot of them although the enlightened insist on RPN. I think a large part of the success is that high-schools pretty much insist on a TI calculator. I bought my daughter's 84 on craigslist from a college freshman - I thought $120 for a new one was a bit steep.