HP 48G - what next?

[JSS]

Dear all,

I have been using 48G for 25 years. I just got a new 35S which is OK for very simple calculations but don't have the advanced capabilities of 48G (RPL, object oriented variables, unlimited stack etc.)

I need a better calculator w advanced programming capabilities, EE and physics libraries and good keyboard/display. Possibilities are 1) to find a used or new 50G or 2) to buy the Prime. Can you recommend Prime and how different is it compared to 48G?

I thank you in advance for you kind answers.

BR JSS