HP 42S / DM42 vs HP 48-series question

[polbit]

My HP calculator experience is deeply rooted in 28/48 series, and its flexible size and object-type stack. Forget the symbolic math or CAS for second - just looking at the fixed stack of a 42, especially the DM42 version with that great screen, what is it that makes people choose the 42 over 48?

Is it familiarity, muscle memory, or is there a genuine benefit for some/most operations, etc? I know a 48 is second nature to me, which makes a non-RPN calculator a no-go, but 42 seems to be a bit constricted as well.

Hope this isn't a religious topic As someone with no experience using one, I'm just interested in reasons and methods behind the 42 and its derivatives being so popular these days.