DM41x vs DM42 from an HP48/50 user perspective

[vertab3]

Hello everyone, new here.

I have used HPs starting in high school with 28C/S and progressed with 48/49/50 series. From CAS (less important now) to some deep system RPL programming, I always enjoyed tinkering with them, however as life happened I haven't really done much with them in quite a while. For reference, I have never actually used a 41 or 42 except to check out Free42 on my phone.

Ok, finally, my question. For programming and tinkering with it (ignoring speed difference), would DM42 still be a better choice, or does DM41X allow for deeper programming (assembler?), etc? Just looking for some feedback for someone new to both platforms...

THanks!