Need advice from Engineers who are also TI users

[BruceH]

(06-04-2018 10:17 AM)Nigel (UK) Wrote:  If you like the TI-83+ you'll probably love the TI-86: well out of production but still available on various auction sites.

If you're going to consider buying second-hand then have a look for an HP-20S. Algebraic (as you're used to) and has lots of math functions and unit conversions direct from the keyboard. Large, clear display but only single line.