Crazy good deal on a 50G

[bhtooefr]

RPL's input method is consistent with Entry RPN, not Classic RPN. (That is, typing in a number and hitting Enter puts it onto the stack, but doesn't raise it. Then, entering the next number raises the stack. In Classic RPN, hitting enter puts it onto the stack, raises it, and duplicates it down, and entering the next number replaces it.)

RPL uses an infinite(ish) stack, which has some... implications regarding stack handling. No T level that copies down, and stack operations are more complex.

In my opinion, the RPL machines are more "pure". Operations behave in a more consistent manner, and because the stack is infiniteish, commands that often take operands after the command on a RPN machine (to save stack space - think STO and RCL), take them before the command on an RPL machine.