Calc recommendation - self-study college math refresh

[HPing]

Thank you all for the responses. Learning why people have several calculators. Still noodling but my ideas now:

Top 3 for now (need to decide!)
- 42s - A tank with the easy menus. The mediocre screen contrast is OK for my eyes (I used one before).

- 48 - Great documentation and build. Popular screen/ key issues look easy to fix (but opening the shell is really difficult). More rare screen delamination seems to require a replacement screen, although I see people on the HPC forums removing a screen layer for cleaning, no sure that is possible with these.

- 50s - Good overall. Less documentation, construction quality, and style. Less expensive

Future ideas:
- 15se - Great build, 16c mode & supports Moravia. Seems less intuitive so maybe not first buy (anyways I have several 12c models for basic maths)

- 42DM - Good overall, updates including c47, supports SwissMicros. Expensive, dealing with updates; the nits would bother me.

Discounted daily
- 39gs / 40gs - Inexpensive options (latter with CAS albeit not ideally integrated). Might get one for travel.