Program to compare 32sii vs. 42s programming

[Steve Simpkin]

The following RPN Calculator Comparison Table notes some of the differences between the HP 32SII and the HP-42S (and other models).
HP Plus RPN Calculator Comparison Table

The HP 32SII and HP-42S somewhat overlap in functionality with the HP-42S having a more powerful programming model (multi-character program labels and variable names, seperate program space for each program, local labels, more alphanumeric functionality, HP-41C series program compatibility, more flags, etc), 2-line display, matrix operations, plotting, custom menus, infrared printer output, sound, more operations that accept complex numbers, and generally more functions than the HP 32SII.
Conversely, the HP 32SII has an algebraic equation editor/list for its Solver and Numerical Integration functions (you have to write RPN programs for these on the HP-42S), native support of fractions and a few unit conversion functions. It also has most of its functions on the keypad vs hiding them in menus on the HP-42S. There are other differences of course, but these are the main ones that I can think of.

There are also some very good videos that highlight the programming models of each model at Logan West's YouTube channel.
HP 32SII Video Series
HP-42S Video Series